Implement 'clang_getInclusions()' in CIndex.  This API allows clients to walk the set of files included in a translation unit via the C API.

llvm-svn: 94575
diff --git a/clang/tools/CIndex/CIndex.exports b/clang/tools/CIndex/CIndex.exports
index ef77fed..12e2788e 100644
--- a/clang/tools/CIndex/CIndex.exports
+++ b/clang/tools/CIndex/CIndex.exports
@@ -28,6 +28,7 @@
 _clang_getFile
 _clang_getFileName
 _clang_getFileTime
+_clang_getInclusions
 _clang_getInstantiationLocation
 _clang_getLocation
 _clang_getNullCursor