Per discussion in http://lists.cs.uiuc.edu/pipermail/cfe-commits/Week-of-Mon-20120917/064551.html
have PPCallbacks::InclusionDirective pass the character range for the filename quotes or brackets.

rdar://11113134 & http://llvm.org/PR13880

llvm-svn: 164743
diff --git a/clang/tools/libclang/Indexing.cpp b/clang/tools/libclang/Indexing.cpp
index ae52004..7e65483 100644
--- a/clang/tools/libclang/Indexing.cpp
+++ b/clang/tools/libclang/Indexing.cpp
@@ -68,8 +68,8 @@
                                   const Token &IncludeTok,
                                   StringRef FileName,
                                   bool IsAngled,
+                                  CharSourceRange FilenameRange,
                                   const FileEntry *File,
-                                  SourceLocation EndLoc,
                                   StringRef SearchPath,
                                   StringRef RelativePath) {
     bool isImport = (IncludeTok.is(tok::identifier) &&