[arch-dev-public] libx11/xorgproto dependency

[Evangelos Foutras]

Downstream consumers of libx11 shouldn't have to know and account for
libx11's headers/pkg-config files referencing xorgproto. A
libx11-devel package would depend on xorgproto. Since there's no
separate -devel package, the dependency stays with the regular libx11
package.

You already called (a) the pragmatic approach and it seems like a
no-brainer at 1.5 MiB installed size.

If we go with (c), it might be worthwhile to mass edit packages in
/trunk to add the build dep. Doing that manually for hundreds of
packages is a huge time sink and quite annoying during rebuilds.