Remove deprecated GCC flag "-mno-cygwin".
Remove hardcoded march to allow 64-bit builds.
Always use Win32 threads for mingw.
Define AMD64 for 64-bit mingw.
mingw-w64 have isinf
Fix cast error.
mingw-w64 don't need hack for SecPkgContext_AccessToken
Use modern ICU libraries when link with system wide ICU.
mingw-w64 don't have win98 support.
Fix using function pointer.
Fix redefinition of matherr.
Don't export gds__print_pool as it not part of API according to gds_proto.h:135
mingw-w64 have fenv.h
Fix cast error for 64-bit.
Fix source extension.
Move extra mingw sources definitions for fbintl to Makefile.in.intl
Add missing sources for utils building.
fbserver don't need to link with def files.
smtp_server: Add win32 platform files.
Fix building net_server and mp_server with mingw