[libc++] Remove unnecessary MSVCRT exclusions
authorShoaib Meenai <smeenai@fb.com>
Tue, 8 Nov 2016 03:31:42 +0000 (03:31 +0000)
committerShoaib Meenai <smeenai@fb.com>
Tue, 8 Nov 2016 03:31:42 +0000 (03:31 +0000)
commit76728d88ec5e59bd1498b16c98059113084e7836
tree57e7e0de7bb5d5ddeea1d9d2f17d5ac9613e82b7
parentb9bd6fad10218d34dccedce666f5cf6774553321
[libc++] Remove unnecessary MSVCRT exclusions

Visual Studio 2013 and up have these functions, and we don't need to
support older versions.

There are some remaining _LIBCPP_MSVCRT exclusions which are present on
Visual Studio 2015 but not 2013. Those will be addressed in a follow-up.

Differential Revision: https://reviews.llvm.org/D26377

llvm-svn: 286202
libcxx/include/cmath
libcxx/include/cstdio
libcxx/include/cwchar