ref: fc4eb838ab4af811315b80e91164e00d1ec8d6b9
dir: /u/clean.bat/
rmdir /s /q debug rmdir /s /q release rmdir /s /q debug_gl rmdir /s /q release_gl rmdir /s /q gas2masm\debug rmdir /s /q gas2masm\release del gas2masm\gas2masm.opt del gas2masm\gas2masm.plg del gas2masm\gas2masm.ncb del gas2masm\gas2masm.stt del WinQuake.opt del WinQuake.plg del WinQuake.ncb del WinQuake.stt