msys2: fix build instructions, improve library bundling <3 @Mario
- fix MSYS2 build instructions
- fixes bundling on MSYS2 (libs, gtk2 loaders, engines and themes)
- install the bundle
- let cmake install the downloaded gamepacks itself
- increase resolution of netradiant icon and use it as exe icon
- some more stuff (q3map2 icon etc.)
The install_manifest.txt
file must now contain all installed files, including gamepacks, not only on msys2.
Edited by Thomas Debesse