patch 8.1.0128: building with MinGW does not work out-of-the-box commit https://github.com/vim/vim/commit/304925e75031751fc87b51e387eb079bf3ae2066 Author: Bram Moolenaar <Bram@vim.org> Date: Sat Jun 30 16:27:02 2018 +0200 patch 8.1.0128: building with MinGW does not work out-of-the-box Problem: Building with MinGW does not work out-of-the-box. Solution: Add instructions for MSYS2. Set default WINVER. Add batch files to set $PATH for MSYS2.