patch 9.1.0502: MS-Windows: too much legacy code Commit: https://github.com/vim/vim/commit/56f587b3f81f403bb0546c6892b3273b2a9e954f Author: K.Takata <kentkt@csc.jp> Date: Wed Jun 19 19:56:03 2024 +0200 patch 9.1.0502: MS-Windows: too much legacy code Problem: MS-Windows: too much legacy code Solution: Clean up old code (Ken Takata) * Remove very old codes for Cygwin version of GCC. Nowadays Cygwin GCC cannot be used for building Win32 Vim. (The `-mno-cygwin` option was removed in Cygwin GCC4.) * Remove old codes for old versions of MinGW. Remove `__MINGW32__` as much as possible. * Adjust makefile. closes: #15044 Signed-off-by: K.Takata <kentkt@csc.jp> Signed-off-by: Christian Brabandt <cb@256bit.org>