cross-compiler-rt: build armv7 and aarch64 targets
cross-compiler-rt: build armv7 and aarch64 targets

The armv7 lib needs to be called 'arm' not 'armv7' for clang to find it.

JPeterMugaas/MSYS2-packages,mati865/MSYS2-packages,JPeterMugaas/MSYS2-packages,atom2013/MSYS2-packages,waterlan/MSYS2-packages,Alexpux/MSYS2-packages,mati865/MSYS2-packages,waterlan/MSYS2-packages,atom2013/MSYS2-packages,mati865/MSYS2-packages,atom2013/MSYS2-packages,Alexpux/MSYS2-packages,waterlan/MSYS2-packages,JPeterMugaas/MSYS2-packages,waterlan/MSYS2-packages,atom2013/MSYS2-packages,Alexpux/MSYS2-packages,mati865/MSYS2-packages,JPeterMugaas/MSYS2-packages,Alexpux/MSYS2-packages