Implement a __WCHAR_UNSIGNED__ macro and use it to include WCHAR_MIN and
WCHAR_MAX in limits.h, thus solving the problem where the system header
thinks it knows better.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@135455 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed