Configure ELAST for MinGW

Summary:
Use _LIBCPP_MSVCRT_LIKE while configuring ELAST, so MinGW gets the same
configuration as MSVC.

Reviewers: compnerd, srhines, danalbert, mstorsjo

Subscribers: christof, ldionne, cfe-commits

Differential Revision: https://reviews.llvm.org/D48731

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@335916 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed