Increase the limit on parser diagnostics

We're really close to the limit
$ grep -c DIAG tools/clang/include/clang/Basic/DiagnosticParseKinds.inc
598

Author: d0k

clang/include/clang/Basic/DiagnosticIDs.h

@@ -34,7 +34,7 @@ namespace clang {
       DIAG_SIZE_FRONTEND      =  150,
       DIAG_SIZE_SERIALIZATION =  120,
       DIAG_SIZE_LEX           =  400,
-      DIAG_SIZE_PARSE         =  600,
+      DIAG_SIZE_PARSE         =  700,
       DIAG_SIZE_AST           =  250,
       DIAG_SIZE_COMMENT       =  100,
       DIAG_SIZE_CROSSTU       =  100,