mercurial: Update to 5.7.1
mercurial: Update to 5.7.1

Rename python3 to python in dependency.
atom2013/MSYS2-packages,mati865/MSYS2-packages,JPeterMugaas/MSYS2-packages,atom2013/MSYS2-packages,Alexpux/MSYS2-packages,waterlan/MSYS2-packages,JPeterMugaas/MSYS2-packages,waterlan/MSYS2-packages,waterlan/MSYS2-packages,mati865/MSYS2-packages,JPeterMugaas/MSYS2-packages,Alexpux/MSYS2-packages,atom2013/MSYS2-packages,JPeterMugaas/MSYS2-packages,Alexpux/MSYS2-packages,waterlan/MSYS2-packages,atom2013/MSYS2-packages,mati865/MSYS2-packages,mati865/MSYS2-packages,Alexpux/MSYS2-packages