fix a concat related build issue with old GCC version
fix a concat related build issue with old GCC version

tensorflow/tensorflow-pywrap_saved_model,hehongliang/tensorflow,manipopopo/tensorflow,Intel-tensorflow/tensorflow,ppwwyyxx/tensorflow,kevin-coder/tensorflow-fork,cxxgtxy/tensorflow,kobejean/tensorflow,tensorflow/tensorflow,Intel-tensorflow/tensorflow,lukeiwanski/tensorflow,seanli9jan/tensorflow,lukeiwanski/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,kevin-coder/tensorflow-fork,ppwwyyxx/tensorflow,karllessard/tensorflow,annarev/tensorflow,aldian/tensorflow,Intel-Corporation/tensorflow,seanli9jan/tensorflow,lukeiwanski/tensorflow,gunan/tensorflow,aam-at/tensorflow,jbedorf/tensorflow,petewarden/tensorflow,Bismarrck/tensorflow,xodus7/tensorflow,cxxgtxy/tensorflow,petewarden/tensorflow,gojira/tensorflow,hfp/tensorflow-xsmm,frreiss/tensorflow-fred,arborh/tensorflow,aam-at/tensorflow,lukeiwanski/tensorflow,adit-chandra/tensorflow,hehongliang/tensorflow,karllessard/tensorflow,Intel-Corporation/tensorflow,girving/tensorflow,tensorflow/tensorflow,sarvex/tensorflow,jart/tensorflow,Intel-tensorflow/tensorflow,jhseu/tensorflow,gautam1858/tensorflow,caisq/tensorflow,ageron/tensorflow,nburn42/tensorflow,renyi533/tensorflow,lukeiwanski/tensorflow,ppwwyyxx/tensorflow,ppwwyyxx/tensorflow,jendap/tensorflow,alshedivat/tensorflow,aselle/tensorflow,adit-chandra/tensorflow,tensorflow/tensorflow-pywrap_tf_optimizer,tensorflow/tensorflow-pywrap_saved_model,caisq/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,Intel-tensorflow/tensorflow,annarev/tensorflow,xzturn/tensorflow,drpngx/tensorflow,manipopopo/tensorflow,chemelnucfin/tensorflow,tensorflow/tensorflow,ageron/tensorflow,girving/tensorflow,yongtang/tensorflow,DavidNorman/tensorflow,dancingdan/tensorflow,apark263/tensorflow,DavidNorman/tensorflow,xodus7/tensorflow,tensorflow/tensorflow,Intel-tensorflow/tensorflow,DavidNorman/tensorflow,drpngx/tensorflow,theflofly/tensorflow,tensorflow/tensorflow-pywrap_tf_optimizer,meteorcloudy/tensorflow,jalexvig/tensorflow,xodus7/tensorflow,paolodedios/tensorflow,gojira/tensorflow,renyi533/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,aam-at/tensorflow,benoitsteiner/tensorflow-xsmm,brchiu/tensorflow,apark263/tensorflow,caisq/tensorflow,manipopopo/tensorflow,paolodedios/tensorflow,dongjoon-hyun/tensorflow,Intel-tensorflow/tensorflow,seanli9jan/tensorflow,gautam1858/tensorflow,gunan/tensorflow,adit-chandra/tensorflow,dongjoon-hyun/tensorflow,karllessard/tensorflow,tensorflow/tensorflow-pywrap_saved_model,ZhangXinNan/tensorflow,xodus7/tensorflow,brchiu/tensorflow,annarev/tensorflow,tensorflow/tensorflow,gojira/tensorflow,sarvex/tensorflow,Bismarrck/tensorflow,brchiu/tensorflow,karllessard/tensorflow,dendisuhubdy/tensorflow,arborh/tensorflow,Intel-tensorflow/tensorflow,kevin-coder/tensorflow-fork,dongjoon-hyun/tensorflow,dendisuhubdy/tensorflow,karllessard/tensorflow,Bismarrck/tensorflow,aselle/tensorflow,kobejean/tensorflow,brchiu/tensorflow,petewarden/tensorflow,dendisuhubdy/tensorflow,ppwwyyxx/tensorflow,aldian/tensorflow,frreiss/tensorflow-fred,jart/tensorflow,yongtang/tensorflow,tensorflow/tensorflow-pywrap_tf_optimizer,aam-at/tensorflow,theflofly/tensorflow,jhseu/tensorflow,xodus7/tensorflow,DavidNorman/tensorflow,ppwwyyxx/tensorflow,tensorflow/tensorflow-pywrap_saved_model,yongtang/tensorflow,asimshankar/tensorflow,karllessard/tensorflow,asimshankar/tensorflow,AnishShah/tensorflow,dancingdan/tensorflow,asimshankar/tensorflow,annarev/tensorflow,Intel-Corporation/tensorflow,alsrgv/tensorflow,tensorflow/tensorflow-pywrap_tf_optimizer,kobejean/tensorflow,nburn42/tensorflow,freedomtan/tensorflow,drpngx/tensorflow,gunan/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,jbedorf/tensorflow,ZhangXinNan/tensorflow,aselle/tensorflow,aselle/tensorflow,cxxgtxy/tensorflow,snnn/tensorflow,asimshankar/tensorflow,annarev/tensorflow,karllessard/tensorflow,ageron/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,jart/tensorflow,davidzchen/tensorflow,ghchinoy/tensorflow,ZhangXinNan/tensorflow,xzturn/tensorflow,alsrgv/tensorflow,frreiss/tensorflow-fred,jart/tensorflow,nburn42/tensorflow,davidzchen/tensorflow,dongjoon-hyun/tensorflow,ageron/tensorflow,AnishShah/tensorflow,caisq/tensorflow,asimshankar/tensorflow,lukeiwanski/tensorflow,DavidNorman/tensorflow,alshedivat/tensorflow,renyi533/tensorflow,dongjoon-hyun/tensorflow,seanli9jan/tensorflow,dancingdan/tensorflow,brchiu/tensorflow,kobejean/tensorflow,yongtang/tensorflow,jendap/tensorflow,jhseu/tensorflow,xzturn/tensorflow,theflofly/tensorflow,asimshankar/tensorflow,yanchen036/tensorflow,meteorcloudy/tensorflow,gojira/tensorflow,Intel-Corporation/tensorflow,dendisuhubdy/tensorflow,tensorflow/tensorflow-pywrap_tf_optimizer,drpngx/tensorflow,davidzchen/tensorflow,sarvex/tensorflow,caisq/tensorflow,theflofly/tensorflow,xodus7/tensorflow,alsrgv/tensorflow,freedomtan/tensorflow,xzturn/tensorflow,asimshankar/tensorflow,DavidNorman/tensorflow,manipopopo/tensorflow,kobejean/tensorflow,girving/t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orflow,renyi533/tensorflow,dendisuhubdy/tensorflow,freedomtan/tensorflow,tensorflow/tensorflow-pywrap_saved_model,drpngx/tensorflow,adit-chandra/tensorflow,girving/tensorflow,aldian/tensorflow,gautam1858/tensorflow,benoitsteiner/tensorflow-xsmm,theflofly/tensorflow,davidzchen/tensorflow,snnn/tensorflow,jbedorf/tensorflow,dendisuhubdy/tensorflow,jart/tensorflow,manipopopo/tensorflow,petewarden/tensorflow,manipopopo/tensorflow,gojira/tensorflow,ZhangXinNan/tensorflow,manipopopo/tensorflow,kobejean/tensorflow,ppwwyyxx/tensorflow,brchiu/tensorflow,freedomtan/tensorflow,jhseu/tensorflow,tensorflow/tensorflow,Intel-tensorflow/tensorflow,adit-chandra/tensorflow,jbedorf/tensorflow,tensorflow/tensorflow-pywrap_tf_optimizer,asimshankar/tensorflow,snnn/tensorflow,renyi533/tensorflow,gautam1858/tensorflow,Bismarrck/tensorflow,ppwwyyxx/tensorflow,caisq/tensorflow,gojira/tensorflow,asimshankar/tensorflow,adit-chandra/tensorflow,aldian/tensorflow,dancingdan/tensorflow,AnishShah/tensorflow,hfp/tensorflow-xsmm,dancingdan/tensorflow,Intel-Corporation/tensorflow,lukeiwanski/tensorflow,annarev/tensorflow,adit-chandra/tensorflow,ghchinoy/tensorflow,frreiss/tensorflow-fred,jhseu/tensorflow,ghchinoy/tensorflow,manipopopo/tensorflow,ageron/tensorflow,ageron/tensorflow,alshedivat/tensorflow,annarev/tensorflow,dancingdan/tensorflow,petewarden/tensorflow,ZhangXinNan/tensorflow,xzturn/tensorflow,nburn42/tensorflow,alsrgv/tensorflow,arborh/tensorflow,dongjoon-hyun/tensorflow,yanchen036/tensorflow,ppwwyyxx/tensorflow,dongjoon-hyun/tensorflow,benoitsteiner/tensorflow-xsmm,ZhangXinNan/tensorflow,snnn/tensorflow,freedomtan/tensorflow,aldian/tensorflow,aselle/tensorflow,kevin-coder/tensorflow-fork,gojira/tensorflow,gautam1858/tensorflow,apark263/tensorflow,annarev/tensorflow,aselle/tensorflow,freedomtan/tensorflow,dendisuhubdy/tensorflow,gautam1858/tensorflow,xodus7/tensorflow,girving/tensorflow,yongtang/tensorflow,renyi533/tensorflow,brchiu/tensorflow,adit-chandra/tensorflow,hehongliang/tensorflow,alshedivat/tensorflow,apark263/tensorflow,frreiss/tensorflow-fred,davidzchen/tensorflow,arborh/tensorflow,gautam1858/tensorflow,Bismarrck/tensorflow,kevin-coder/tensorflow-fork,hfp/tensorflow-xsmm,nburn42/tensorflow,jendap/tensorflow,theflofly/tensorflow,snnn/tensorflow,kobejean/tensorflow,chemelnucfin/tensorflow,alshedivat/tensorflow,alshedivat/tensorflow,aselle/tensorflow,ghchinoy/tensorflow,DavidNorman/tensorflow,girving/tensorflow,yongtang/tensorflow,dendisuhubdy/tensorflow,apark263/tensorflow,brchiu/tensorflow,DavidNorman/tensorflow,chemelnucfin/tensorflow,kevin-coder/tensorflow-fork,tensorflow/tensorflow-pywrap_saved_model,aam-at/tensorflow,xodus7/tensorflow,adit-chandra/tensorflow,theflofly/tensorflow,karllessard/tensorflow,girving/tensorflow,hfp/tensorflow-xsmm,alshedivat/tensorflow,paolodedios/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,ageron/tensorflow,DavidNorman/tensorflow,davidzchen/tensorflow,jbedorf/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,ppwwyyxx/tensorflow,paolodedios/tensorflow,ageron/tensorflow,jhseu/tensorflow,kevin-coder/tensorflow-fork,arborh/tensorflow,aam-at/tensorflow,gunan/tensorflow,jbedorf/tensorflow,davidzchen/tensorflow,xodus7/tensorflow,jendap/tensorflow,yanchen036/tensorflow,AnishShah/tensorflow,frreiss/tensorflow-fred,Bismarrck/tensorflow,kevin-coder/tensorflow-fork,hfp/tensorflow-xsmm,ZhangXinNan/tensorflow,chemelnucfin/tensorflow,Bismarrck/tensorflow,gautam1858/tensorflow,ghchinoy/tensorflow,gojira/tensorflow,brchiu/tensorflow,ZhangXinNan/tensorflow,dancingdan/tensorflow,DavidNorman/tensorflow,arborh/tensorflow,Bismarrck/tensorflow,AnishShah/tensorflow,jendap/tensorflow,tensorflow/tensorflow,paolodedios/tensorflow,ppwwyyxx/tensorflow,freedomtan/tensorflow,alshedivat/tensorflow,manipopopo/tensorflow,nburn42/tensorflow,cxxgtxy/tensorflow,dongjoon-hyun/tensorflow,freedomtan/tensorflow,meteorcloudy/tensorflow,gunan/tensorflow,yongtang/tensorflow,caisq/tensorflow,caisq/tensorflow,jalexvig/tensorflow,jalexvig/tensorflow,drpngx/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,alsrgv/tensorflow,snnn/tensorflow,meteorcloudy/tensorflow,xzturn/tensorflow,hehongliang/tensorflow,frreiss/tensorflow-fred,gojira/tensorflow,cxxgtxy/tensorflow,seanli9jan/tensorflow,ppwwyyxx/tensorflow,sarvex/tensorflow,hehongliang/tensorflow,AnishShah/tensorflow,yanchen036/tensorflow,xzturn/tensorflow,gunan/tensorflow,drpngx/tensorflow,aam-at/tensorflow,annarev/tensorflow,yongtang/tensorflow,apark263/tensorflow,jendap/tensorflow,sarvex/tensorflow,freedomtan/tensorflow,AnishShah/tensorflow,benoitsteiner/tensorflow-xsmm,caisq/tensorflow,aselle/tensorflow,sarvex/tensorflow,ghchinoy/tensorflow,theflofly/tensorflow,yongtang/tensorflow,renyi533/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,arborh/tensorflow,tensorflow/tensorflow-pywrap_tf_optimizer,drpngx/tensorflow,aam-at/tensorflow,yanchen036/tensorflow,xodus7/tensorflow,freedomtan/tensorflow,gojira/tensorflow,renyi533/tensorflow,hfp/tensorflow-xsmm,jbedorf/tensorflow,Intel-tensorflow/tensorflow,jbedorf/tensorflow,yongtang/tensorflow,renyi533/tensorflow,paolodedios/tensorflow,gunan/tensorflow,karllessard/tensorflow,aam-at/tensorflow,petewarden/tensorflow,frreiss/tensorflow-fred,gunan/tensorflow,Intel-tensorflow/tensorflow,girving/tensorflow,xzturn/tensorflow,hehongliang/tensorflow,benoitsteiner/tensorflow-xsmm,xzturn/tensorflow,annarev/tensorflow,apark263/tensorflow,arborh/tensorflow