Implement clang_getDiagnosticCategoryText() to provide a way for a client of libclang to accurately
get the diagnostic category name from a serialized diagnostic when the version of libclang used
to read the diagnostic file is newer than the clang that emitted the diagnostic file.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@154567 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/libclang/libclang.exports b/tools/libclang/libclang.exports
index 07bdece..d3b64db 100644
--- a/tools/libclang/libclang.exports
+++ b/tools/libclang/libclang.exports
@@ -6,9 +6,9 @@
 clang_CXXMethod_isVirtual
 clang_Cursor_getArgument
 clang_Cursor_getNumArguments
+clang_Cursor_getObjCSelectorIndex
 clang_Cursor_getSpellingNameRange
 clang_Cursor_getTranslationUnit
-clang_Cursor_getObjCSelectorIndex
 clang_Cursor_isNull
 clang_IndexAction_create
 clang_IndexAction_dispose
@@ -97,6 +97,7 @@
 clang_getDiagnostic
 clang_getDiagnosticCategory
 clang_getDiagnosticCategoryName
+clang_getDiagnosticCategoryText
 clang_getDiagnosticFixIt
 clang_getDiagnosticInSet
 clang_getDiagnosticLocation