Change x11/xorgproto to become a build dep
Change x11/xorgproto to become a build time dependency when added to
USE_XORG. Change the dependency to be on the port, rather than a file the
Bump portrevision on depending ports.
Reviewed by: eadler
Approved by: portmgr (antoine)
Obtained from: https://github.com/FreeBSDDesktop/freebsd-ports/tree/feature/xorgproto
Differential Revision: https://reviews.freebsd.org/D16906