gnutls-devel: depend on other -devel packages
gnutls-devel: depend on other -devel packages

`pkg-config --exists --print-errors gnutls` fails if those .pc files are
missing.

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