give FileManager a 'FileSystemOptions' ivar, which will be used
to simplify a bunch of code in it.  It should ultimately get inlined
into FileManager.

llvm-svn: 120007
diff --git a/clang/lib/Frontend/CompilerInvocation.cpp b/clang/lib/Frontend/CompilerInvocation.cpp
index b1d6adb..b0c3036 100644
--- a/clang/lib/Frontend/CompilerInvocation.cpp
+++ b/clang/lib/Frontend/CompilerInvocation.cpp
@@ -1563,7 +1563,7 @@
   // PCH file and find the original header name. Remove the need to do that in
   // ParsePreprocessorArgs and remove the FileManager & FileSystemOptions
   // parameters from the function and the "FileManager.h" #include.
-  FileManager FileMgr;
+  FileManager FileMgr(Res.getFileSystemOpts());
   ParsePreprocessorArgs(Res.getPreprocessorOpts(), *Args,
                         FileMgr, Res.getFileSystemOpts(), Diags);
   ParsePreprocessorOutputArgs(Res.getPreprocessorOutputOpts(), *Args);