Increase the number of parser diagnostics.

The reserved range for parser diagnostics is getting close to being filled,
so increase the space for them.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@365727 91177308-0d34-0410-b5e6-96231b3b80d8

include/clang/Basic/DiagnosticIDs.h

@@ -32,7 +32,7 @@ namespace clang {
       DIAG_SIZE_FRONTEND      =  150,
       DIAG_SIZE_SERIALIZATION =  120,
       DIAG_SIZE_LEX           =  400,
-      DIAG_SIZE_PARSE         =  500,
+      DIAG_SIZE_PARSE         =  600,
       DIAG_SIZE_AST           =  200,
       DIAG_SIZE_COMMENT       =  100,
       DIAG_SIZE_CROSSTU       =  100,