Cached the file-related properties of TranslationUnit to avoid the performance cost.
Cached the file-related properties of TranslationUnit to avoid the performance cost.

Signed-off-by: Dimitar Dobrev <ca751a5c976abad79158718440750fc638d19ebc@yahoo.com>

Samana/CppSharp,mohtamohit/CppSharp,genuinelucifer/CppSharp,zillemarco/CppSharp,Samana/CppSharp,ddobrev/CppSharp,mono/CppSharp,inordertotest/CppSharp,inordertotest/CppSharp,nalkaro/CppSharp,u255436/CppSharp,Samana/CppSharp,ktopouzi/CppSharp,ddobrev/CppSharp,xistoso/CppSharp,mydogisbox/CppSharp,mohtamohit/CppSharp,SonyaSa/CppSharp,ddobrev/CppSharp,mydogisbox/CppSharp,SonyaSa/CppSharp,genuinelucifer/CppSharp,genuinelucifer/CppSharp,mydogisbox/CppSharp,mono/CppSharp,inordertotest/CppSharp,mydogisbox/CppSharp,xistoso/CppSharp,zillemarco/CppSharp,genuinelucifer/CppSharp,nalkaro/CppSharp,u255436/CppSharp,zillemarco/CppSharp,xistoso/CppSharp,SonyaSa/CppSharp,mohtamohit/CppSharp,nalkaro/CppSharp,mono/CppSharp,nalkaro/CppSharp,SonyaSa/CppSharp,zillemarco/CppSharp,ktopouzi/CppSharp,Samana/CppSharp,ktopouzi/CppSharp,u255436/CppSharp,nalkaro/CppSharp,xistoso/CppSharp,genuinelucifer/CppSharp,mohtamohit/CppSharp,u255436/CppSharp,xistoso/CppSharp,mono/CppSharp,inordertotest/CppSharp,ddobrev/CppSharp,mohtamohit/CppSharp,mydogisbox/CppSharp,mono/CppSharp,ktopouzi/CppSharp,mono/CppSharp,SonyaSa/CppSharp,ktopouzi/CppSharp,zillemarco/CppSharp,Samana/CppSharp,inordertotest/CppSharp,ddobrev/CppSharp,u255436/CppSharp