Splitting the duplicated decl spec extension warning into two: one is an ExtWarn and the other a vanilla warning.  This addresses PR13705, where const char const * wouldn't warn unless -pedantic was specified under the right conditions.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@162793 91177308-0d34-0410-b5e6-96231b3b80d8
6 files changed