Fix calls to C.CString() in graph.go to avoid memory leaks.
Fix calls to C.CString() in graph.go to avoid memory leaks.

alsrgv/tensorflow,petewarden/tensorflow,yongtang/tensorflow,ghchinoy/tensorflow,yongtang/tensorflow,arborh/tensorflow,adit-chandra/tensorflow,alsrgv/tensorflow,kevin-coder/tensorflow-fork,alsrgv/tensorflow,jhseu/tensorflow,karllessard/tensorflow,xzturn/tensorflow,davidzchen/tensorflow,xzturn/tensorflow,gunan/tensorflow,frreiss/tensorflow-fred,ghchinoy/tensorflow,jendap/tensorflow,hfp/tensorflow-xsmm,tensorflow/tensorflow-pywrap_tf_optimizer,freedomtan/tensorflow,sarvex/tensorflow,chemelnucfin/tensorflow,gunan/tensorflow,frreiss/tensorflow-fred,jhseu/tensorflow,gautam1858/tensorflow,tensorflow/tensorflow-pywrap_saved_model,alsrgv/tensorflow,ageron/tensorflow,hfp/tensorflow-xsmm,xzturn/tensorflow,arborh/tensorflow,Intel-Corporation/tensorflow,cxxgtxy/tensorflow,annarev/tensorflow,tensorflow/tensorflow-pywrap_tf_optimizer,ghchinoy/tensorflow,adit-chandra/tensorflow,adit-chandra/tensorflow,frreiss/tensorflow-fred,xzturn/tensorflow,paolodedios/tensorflow,alsrgv/tensorflow,kevin-coder/tensorflow-fork,chemelnucfin/tensorflow,ppwwyyxx/tensorflow,cxxgtxy/tensorflow,yongtang/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,frreiss/tensorflow-fred,ppwwyyxx/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,renyi533/tensorflow,tensorflow/tensorflow-pywrap_tf_optimizer,yongtang/tensorflow,davidzchen/tensorflow,cxxgtxy/tensorflow,apark263/tensorflow,jbedorf/tensorflow,Bismarrck/tensorflow,aldian/tensorflow,ageron/tensorflow,davidzchen/tensorflow,tensorflow/tensorflow-pywrap_saved_model,DavidNorman/tensorflow,gautam1858/tensorflow,renyi533/tensorflow,aldian/tensorflow,asimshankar/tensorflow,tensorflow/tensorflow-pywrap_tf_optimizer,tensorflow/tensorflow-experimental_link_static_libraries_once,tensorflow/tensorflow-experimental_link_static_libraries_once,petewarden/tensorflow,sarvex/tensorflow,arborh/tensorflow,ppwwyyxx/tensorflow,frreiss/tensorflow-fred,apark263/tensorflow,DavidNorman/tensorflow,petewarden/tensorflow,renyi533/tensorflow,kevin-coder/tensorflow-fork,alsrgv/tensorflow,ppwwyyxx/tensorflow,aldian/tensorflow,apark263/tensorflow,jbedorf/tensorflow,apark263/tensorflow,gunan/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,davidzchen/tensorflow,aam-at/tensorflow,sarvex/tensorflow,adit-chandra/tensorflow,xzturn/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,gunan/tensorflow,frreiss/tensorflow-fred,petewarden/tensorflow,yongtang/tensorflow,ppwwyyxx/tensorflow,petewarden/tensorflow,hfp/tensorflow-xsmm,ppwwyyxx/tensorflow,DavidNorman/tensorflow,Intel-tensorflow/tensorflow,davidzchen/tensorflow,paolodedios/tensorflow,gautam1858/tensorflow,arborh/tensorflow,aam-at/tensorflow,tensorflow/tensorflow,tensorflow/tensorflow-pywrap_saved_model,jendap/tensorflow,ghchinoy/tensorflow,Bismarrck/tensorflow,arborh/tensorflow,jendap/tensorflow,apark263/tensorflow,renyi533/tensorflow,aam-at/tensorflow,karllessard/tensorflow,aam-at/tensorflow,freedomtan/tensorflow,adit-chandra/tensorflow,davidzchen/tensorflow,DavidNorman/tensorflow,asimshankar/tensorflow,Intel-tensorflow/tensorflow,freedomtan/tensorflow,tensorflow/tensorflow-pywrap_saved_model,gunan/tensorflow,hfp/tensorflow-xsmm,Bismarrck/tensorflow,gautam1858/tensorflow,gautam1858/tensorflow,annarev/tensorflow,aldian/tensorflow,xzturn/tensorflow,chemelnucfin/tensorflow,Intel-tensorflow/tensorflow,gautam1858/tensorflow,tensorflow/tensorflow,DavidNorman/tensorflow,ghchinoy/tensorflow,adit-chandra/tensorflow,tensorflow/tensorflow,tensorflow/tensorflow-pywrap_tf_optimizer,asimshankar/tensorflow,Intel-tensorflow/tensorflow,davidzchen/tensorflow,jhseu/tensorflow,DavidNorman/tensorflow,sarvex/tensorflow,jhseu/tensorflow,yongtang/tensorflow,aam-at/tensorflow,alsrgv/tensorflow,adit-chandra/tensorflow,sarvex/tensorflow,freedomtan/tensorflow,cxxgtxy/tensorflow,jhseu/tensorflow,renyi533/tensorflow,paolodedios/tensorflow,asimshankar/tensorflow,Intel-Corporation/tensorflow,jhseu/tensorflow,asimshankar/tensorflow,jbedorf/tensorflow,alsrgv/tensorflow,theflofly/tensorflow,tensorflow/tensorflow,davidzchen/tensorflow,karllessard/tensorflow,frreiss/tensorflow-fred,gautam1858/tensorflow,cxxgtxy/tensorflow,aldian/tensorflow,ageron/tensorflow,annarev/tensorflow,jbedorf/tensorflow,paolodedios/tensorflow,frreiss/tensorflow-fred,jbedorf/tensorflow,jendap/tensorflow,renyi533/tensorflow,chemelnucfin/tensorflow,jendap/tensorflow,apark263/tensorflow,ageron/tensorflow,Bismarrck/tensorflow,ageron/tensorflow,paolodedios/tensorflow,annarev/tensorflow,DavidNorman/tensorflow,tensorflow/tensorflow,Bismarrck/tensorflow,aam-at/tensorflow,aldian/tensorflow,yongtang/tensorflow,kevin-coder/tensorflow-fork,hfp/tensorflow-xsmm,arborh/tensorflow,sarvex/tensorflow,ghchinoy/tensorflow,yongtang/tensorflow,asimshankar/tensorflow,theflofly/tensorflow,alsrgv/tensorflow,jendap/tensorflow,freedomtan/tensorflow,aam-at/tensorflow,kevin-coder/tensorflow-fork,hfp/tensorflow-xsmm,aam-at/tensorflow,jendap/tensorflow,paolodedios/tensorflow,annarev/tensorflow,freedomtan/tensorflow,xzturn/tensorflow,Intel-tensorflow/tensorflow,ageron/tensorflow,apark263/tensorflow,alsrgv/tensorflow,jendap/tensorflow,aam-at/tensorflow,jendap/tensorflow,ppwwyyxx/tensorflow,apark263/tensorflow,ghchinoy/tensorflow,renyi533/tensorflow,arborh/tensorflow,DavidNorman/tensorflow,tensorflow/tensorflow-pywrap_saved_model,jbedorf/tensorflow,theflofly/tensorflow,freedomtan/tensorflow,tensorflow/tensorflow-pywrap_tf_optimizer,ageron/tensorflow,annarev/tensorflow,jbedorf/tensorflow,renyi533/tensorflow,asimshankar/tensorflow,chemelnucfin/tensorflow,aldian/tensorflow,gautam1858/tensorflow,yongtang/tensorflow,ghchinoy/tensorflow,annarev/tensorflow,tensorflow/tensorflow,ppwwyyxx/tensorflow,gautam1858/tensorflow,theflofly/tensorflow,petewarden/tensorflow,adit-chandra/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,jbedorf/tensorflow,theflofly/tensorflow,aam-at/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,chemelnucfin/tensorflow,adit-chandra/tensorflow,yongtang/tensorflow,frreiss/tensorflow-fred,hfp/tensorflow-xsmm,jendap/tensorflow,paolodedios/tensorflow,adit-chandra/tensorflow,tensorflow/tensorflow-pywrap_tf_optimizer,ageron/tensorflow,tensorflow/tensorflow-pywrap_saved_model,Bismarrck/tensorflow,ghchinoy/tensorflow,arborh/tensorflow,chemelnucfin/tensorflow,petewarden/tensorflow,tensorflow/tensorflow-pywrap_saved_model,renyi533/tensorflow,cxxgtxy/tensorflow,jhseu/tensorflow,Intel-Corporation/tensorflow,Bismarrck/tensorflow,petewarden/tensorflow,DavidNorman/tensorflow,jhseu/tensorflow,gautam1858/tensorflow,tensorflow/tensorflow,kevin-coder/tensorflow-fork,aldian/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,gautam1858/tensorflow,gunan/tensorflow,paolodedios/tensorflow,theflofly/tensorflow,petewarden/tensorflow,jbedorf/tensorflow,theflofly/tensorflow,ghchinoy/tensorflow,renyi533/tensorflow,freedomtan/tensorflow,jbedorf/tensorflow,davidzchen/tensorflow,ghchinoy/tensorflow,Bismarrck/tensorflow,karllessard/tensorflow,frreiss/tensorflow-fred,kevin-coder/tensorflow-fork,freedomtan/tensorflow,petewarden/tensorflow,tensorflow/tensorflow-pywrap_saved_model,jhseu/tensorflow,xzturn/tensorflow,ppwwyyxx/tensorflow,xzturn/tensorflow,karllessard/tensorflow,gunan/tensorflow,ghchinoy/tensorflow,annarev/tensorflow,ageron/tensorflow,ppwwyyxx/tensorflow,aam-at/tensorflow,aam-at/tensorflow,jhseu/tensorflow,davidzchen/tensorflow,asimshankar/tensorflow,yongtang/tensorflow,Bismarrck/tensorflow,karllessard/tensorflow,ageron/tensorflow,paolodedios/tensorflow,theflofly/tensorflow,gunan/tensorflow,chemelnucfin/tensorflow,cxxgtxy/tensorflow,kevin-coder/tensorflow-fork,tensorflow/tensorflow,adit-chandra/tensorflow,Intel-tensorflow/tensorflow,gautam1858/tensorflow,tensorflow/tensorflow-pywrap_saved_model,petewarden/tensorflow,hfp/tensorflow-xsmm,adit-chandra/tensorflow,jhseu/tensorflow,sarvex/tensorflow,xzturn/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,arborh/tensorflow,DavidNorman/tensorflow,ppwwyyxx/tensorflow,Intel-tensorflow/tensorflow,theflofly/tensorflow,arborh/tensorflow,Intel-Corporation/tensorflow,Intel-tensorflow/tensorflow,kevin-coder/tensorflow-fork,theflofly/tensorflow,Bismarrck/tensorflow,tensorflow/tensorflow,xzturn/tensorflow,gunan/tensorflow,alsrgv/tensorflow,karllessard/tensorflow,Intel-tensorflow/tensorflow,Bismarrck/tensorflow,frreiss/tensorflow-fred,annarev/tensorflow,chemelnucfin/tensorflow,tensorflow/tensorflow,tensorflow/tensorflow-pywrap_saved_model,theflofly/tensorflow,tensorflow/tensorflow-pywrap_tf_optimizer,jendap/tensorflow,alsrgv/tensorflow,hfp/tensorflow-xsmm,asimshankar/tensorflow,theflofly/tensorflow,karllessard/tensorflow,karllessard/tensorflow,apark263/tensorflow,davidzchen/tensorflow,gunan/tensorflow,paolodedios/tensorflow,Intel-Corporation/tensorflow,gunan/tensorflow,Intel-tensorflow/tensorflow,renyi533/tensorflow,hfp/tensorflow-xsmm,apark263/tensorflow,annarev/tensorflow,sarvex/tensorflow,DavidNorman/tensorflow,xzturn/tensorflow,chemelnucfin/tensorflow,jhseu/tensorflow,tensorflow/tensorflow-pywrap_tf_optimizer,ageron/tensorflow,arborh/tensorflow,renyi533/tensorflow,karllessard/tensorflow,gunan/tensorflow,freedomtan/tensorflow,freedomtan/tensorflow,Intel-Corporation/tensorflow,paolodedios/tensorflow,hfp/tensorflow-xsmm,asimshankar/tensorflow,ppwwyyxx/tensorflow,kevin-coder/tensorflow-fork,tensorflow/tensorflow-pywrap_tf_optimizer,apark263/tensorflow,davidzchen/tensorflow,tensorflow/tensorflow-pywrap_saved_model,annarev/tensorflow,DavidNorman/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,ageron/tensorflow,petewarden/tensorflow,Intel-Corporation/tensorflow,asimshankar/tensorflow,tensorflow/tensorflow-pywrap_tf_optimizer,jbedorf/tensorflow,karllessard/tensorflow,kevin-coder/tensorflow-fork,Intel-tensorflow/tensorflow,jbedorf/tensorflow,tensorflow/tensorflow,chemelnucfin/tensorflow,chemelnucfin/tensorflow,freedomtan/tensorflow,cxxgtxy/tensorflow,frreiss/tensorflow-fred,Intel-Corporation/tensorflow,arborh/tensorflow