msvcrt.def.in: Don't provide ___lc_codepage_func in def file.

git-svn-id: https://svn.code.sf.net/p/mingw-w64/code@5972 4407c894-4637-0410-b4f5-ada5f102cad1
- Allows winbase.h to use inline intrinsics whether winnt.h is also included or not.
- Brings x86 versions of InterlockedAnd64 et al into alignment with MS.
- Adds the #ifdef for __MINGW_INTRIN_INLINE that jacek wanted for intrin-impl.h.


git-svn-id: https://svn.code.sf.net/p/mingw-w64/code@5973 4407c894-4637-0410-b4f5-ada5f102cad1