apr: Update to 1.5.0
apr-util: Update to 1.5.3
Git: Update to 1.8.4.4
Apr: fix depends
Apr-util: fix depends.
Pacman: fix backup files.
Add mingw-w64 cross toolchains for MSYS2 internal use - need for building MSYS2 runtime.
Remove unnecessary flags
Update win32api packages.
Update runtimes version, fix building