Rename allocator to identifierAllocator and add an identifierMutex to make identifier uniquing thread safe. This also adds a general purpose 'contextMutex' to protect access to the rest of the miscellaneous parts of the MLIRContext, e.g. diagnostics, dialect registration, etc. This is step 5/5 of making the MLIRContext thread-safe.
Rename allocator to identifierAllocator and add an identifierMutex to make identifier uniquing thread safe. This also adds a general purpose 'contextMutex' to protect access to the rest of the miscellaneous parts of the MLIRContext, e.g. diagnostics, dialect registration, etc. This is step 5/5 of making the MLIRContext thread-safe.

PiperOrigin-RevId: 238516697

tensorflow/tensorflow-pywrap_saved_model,xzturn/tensorflow,karllessard/tensorflow,gunan/tensorflow,DavidNorman/tensorflow,Intel-tensorflow/tensorflow,Intel-Corporation/tensorflow,frreiss/tensorflow-fred,tensorflow/tensorflow-experimental_link_static_libraries_once,freedomtan/tensorflow,frreiss/tensorflow-fred,jhseu/tensorflow,paolodedios/tensorflow,gunan/tensorflow,petewarden/tensorflow,xzturn/tensorflow,Intel-tensorflow/tensorflow,Intel-Corporation/tensorflow,yongtang/tensorflow,aam-at/tensorflow,Intel-tensorflow/tensorflow,davidzchen/tensorflow,karllessard/tensorflow,tensorflow/tensorflow-pywrap_tf_optimizer,Intel-tensorflow/tensorflow,sarvex/tensorflow,paolodedios/tensorflow,gunan/tensorflow,renyi533/tensorflow,karllessard/tensorflow,renyi533/tensorflow,tensorflow/tensorflow,paolodedios/tensorflow,Intel-tensorflow/tensorflow,sarvex/tensorflow,adit-chandra/tensorflow,jhseu/tensorflow,tensorflow/tensorflow-pywrap_saved_model,adit-chandra/tensorflow,gautam1858/tensorflow,tensorflow/tensorflow-pywrap_tf_optimizer,tensorflow/tensorflow,petewarden/tensorflow,tensorflow/tensorflow,frreiss/tensorflow-fred,DavidNorman/tensorflow,frreiss/tensorflow-fred,annarev/tensorflow,gautam1858/tensorflow,xzturn/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,aldian/tensorflow,karllessard/tensorflow,yongtang/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,davidzchen/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,arborh/tensorflow,gautam1858/tensorflow,annarev/tensorflow,arborh/tensorflow,tensorflow/tensorflow,arborh/tensorflow,aam-at/tensorflow,ppwwyyxx/tensorflow,arborh/tensorflow,paolodedios/tensorflow,petewarden/tensorflow,paolodedios/tensorflow,sarvex/tensorflow,tensorflow/tensorflow-pywrap_saved_model,DavidNorman/tensorflow,sarvex/tensorflow,Intel-tensorflow/tensorflow,arborh/tensorflow,Intel-tensorflow/tensorflow,jhseu/tensorflow,freedomtan/tensorflow,tensorflow/tensorflow-pywrap_tf_optimizer,jhseu/tensorflow,DavidNorman/tensorflow,tensorflow/tensorflow-pywrap_tf_optimizer,cxxgtxy/tensorflow,renyi533/tensorflow,paolodedios/tensorflow,freedomtan/tensorflow,yongtang/tensorflow,aam-at/tensorflow,Intel-tensorflow/tensorflow,ppwwyyxx/tensorflow,petewarden/tensorflow,tensorflow/tensorflow-pywrap_tf_optimizer,xzturn/tensorflow,davidzchen/tensorflow,arborh/tensorflow,aam-at/tensorflow,ppwwyyxx/tensorflow,davidzchen/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,tensorflow/tensorflow-experimental_link_static_libraries_once,tensorflow/tensorflow-experimental_link_static_libraries_once,petewarden/tensorflow,arborh/tensorflow,ppwwyyxx/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,tensorflow/tensorflow,tensorflow/tensorflow,adit-chandra/tensorflow,gunan/tensorflow,davidzchen/tensorflow,tensorflow/tensorflow-pywrap_tf_optimizer,adit-chandra/tensorflow,annarev/tensorflow,davidzchen/tensorflow,gunan/tensorflow,paolodedios/tensorflow,adit-chandra/tensorflow,gautam1858/tensorflow,jhseu/tensorflow,freedomtan/tensorflow,yongtang/tensorflow,tensorflow/tensorflow-pywrap_tf_optimizer,frreiss/tensorflow-fred,gautam1858/tensorflow,karllessard/tensorflow,arborh/tensorflow,renyi533/tensorflow,jhseu/tensorflow,yongtang/tensorflow,yongtang/tensorflow,cxxgtxy/tensorflow,renyi533/tensorflow,davidzchen/tensorflow,freedomtan/tensorflow,xzturn/tensorflow,paolodedios/tensorflow,davidzchen/tensorflow,tensorflow/tensorflow,gautam1858/tensorflow,xzturn/tensorflow,gautam1858/tensorflow,karllessard/tensorflow,renyi533/tensorflow,sarvex/tensorflow,gunan/tensorflow,tensorflow/tensorflow-pywrap_tf_optimizer,ppwwyyxx/tensorflow,arborh/tensorflow,frreiss/tensorflow-fred,gautam1858/tensorflow,cxxgtxy/tensorflow,DavidNorman/tensorflow,annarev/tensorflow,ppwwyyxx/tensorflow,paolodedios/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,xzturn/tensorflow,ppwwyyxx/tensorflow,gautam1858/tensorflow,aldian/tensorflow,xzturn/tensorflow,jhseu/tensorflow,arborh/tensorflow,xzturn/tensorflow,annarev/tensorflow,jhseu/tensorflow,tensorflow/tensorflow-pywrap_saved_model,aam-at/tensorflow,Intel-Corporation/tensorflow,adit-chandra/tensorflow,ppwwyyxx/tensorflow,gunan/tensorflow,karllessard/tensorflow,aldian/tensorflow,aam-at/tensorflow,petewarden/tensorflow,petewarden/tensorflow,freedomtan/tensorflow,gunan/tensorflow,frreiss/tensorflow-fred,sarvex/tensorflow,adit-chandra/tensorflow,DavidNorman/tensorflow,gautam1858/tensorflow,yongtang/tensorflow,davidzchen/tensorflow,DavidNorman/tensorflow,davidzchen/tensorflow,tensorflow/tensorflow-pywrap_saved_model,paolodedios/tensorflow,DavidNorman/tensorflow,Intel-tensorflow/tensorflow,karllessard/tensorflow,gautam1858/tensorflow,freedomtan/tensorflow,aldian/tensorflow,cxxgtxy/tensorflow,ppwwyyxx/tensorflow,cxxgtxy/tensorflow,petewarden/tensorflow,DavidNorman/tensorflow,renyi533/tensorflow,Intel-tensorflow/tensorflow,davidzchen/tensorflow,petewarden/tensorflow,annarev/tensorflow,tensorflow/tensorflow-pywrap_saved_model,tensorflow/tensorflow-experimental_link_static_libraries_once,ppwwyyxx/tensorflow,renyi533/tensorflow,tensorflow/tensorflow,petewarden/tensorflow,freedomtan/tensorflow,aam-at/tensorflow,cxxgtxy/tensorflow,petewarden/tensorflow,tensorflow/tensorflow-experimental_link_static_libraries_once,DavidNorman/tensorflow,Intel-Corporation/tensorflow,yongtang/tensorflow,Intel-Corporation/tensorflow,annarev/tensorflow,jhseu/tensorflow,arborh/tensorflow,ppwwyyxx/tensorflow,adit-chandra/tensorflow,tensorflow/tensorflow-pywrap_tf_optimizer,sarvex/tensorflow,yongtang/tensorflow,yongtang/tensorflow,aam-at/tensorflow,annarev/tensorflow,frreiss/tensorflow-fred,freedomtan/tensorflow,gautam1858/tensorflow,karllessard/tensorflow,tensorflow/tensorflow-pywrap_saved_model,frreiss/tensorflow-fred,gunan/tensorflow,aam-at/tensorflow,frreiss/tensorflow-fred,tensorflow/tensorflow-pywrap_tf_optimizer,Intel-tensorflow/tensorflow,adit-chandra/tensorflow,aam-at/tensorflow,tensorflow/tensorflow,Intel-Corporation/tensorflow,freedomtan/tensorflow,renyi533/tensorflow,aldian/tensorflow,freedomtan/tensorflow,gunan/tensorflow,renyi533/tensorflow,paolodedios/tensorflow,DavidNorman/tensorflow,tensorflow/tensorflow-pywrap_tf_optimizer,adit-chandra/tensorflow,jhseu/tensorflow,tensorflow/tensorflow-pywrap_saved_model,adit-chandra/tensorflow,annarev/tensorflow,sarvex/tensorflow,freedomtan/tensorflow,frreiss/tensorflow-fred,aam-at/tensorflow,gunan/tensorflow,jhseu/tensorflow,xzturn/tensorflow,cxxgtxy/tensorflow,Intel-Corporation/tensorflow,cxxgtxy/tensorflow,DavidNorman/tensorflow,aldian/tensorflow,tensorflow/tensorflow,adit-chandra/tensorflow,Intel-Corporation/tensorflow,aldian/tensorflow,ppwwyyxx/tensorflow,jhseu/tensorflow,renyi533/tensorflow,tensorflow/tensorflow-pywrap_saved_model,xzturn/tensorflow,xzturn/tensorflow,karllessard/tensorflow,arborh/tensorflow,davidzchen/tensorflow,renyi533/tensorflow,tensorflow/tensorflow,annarev/tensorflow,karllessard/tensorflow,aam-at/tensorflow,frreiss/tensorflow-fred,tensorflow/tensorflow-pywrap_saved_model,tensorflow/tensorflow-pywrap_saved_model,yongtang/tensorflow,annarev/tensorflow,petewarden/tensorflow,aldian/tensorflow,gunan/tensorflow