In preparation of the update of glib remove the -reference ports

Those ports mainly concern old Gnome2 libraries, the behaviour of this infra
is not compatible with the meson build system (being used in newer version)
the documentation is provided otherwise in the other version

Remove ${PORTSDIR}/ from dependencies, categories v, w, x, y, and z.

With hat:	portmgr
Sponsored by:	Absolight

- Drop @dirrm* from and add empty directories to pkg-plists

Approved by:	portmgr blanket, kwm (for gnome@ ports)

Convert GMAKE to MAKE_CMD
Please note that lots of invocation of MAKE_CMD here are wrong as they do not
properly respect MAKE_ENV and friends

With hat:	portmgr

- Stage support for all -reference ports
- Nuke NOPORTDOCS, those ports are already IGNOREd with NOPORTDOCS

Approved by:	kwm (maintainer)

Add NO_STAGE all over the place in preparation for the staging support (cat:
x11-toolkits)

Add an explicit dependency on pkgconf

- update png to 1.5.10

- update to 1.4.1
Reviewed by:    exp8 run on pointyhat
Supported by:   miwi

- update to jpeg-8

- bump all port that indirectly depends on libjpeg and have not yet been bumped
or updated
Requested by:   edwin

Add %%PORTDOCS%% to the static plist items.

Reported by:    QAT

Fix the NOPORTDOCS cases.

Reported by:    QAT

- Welcome X.org 7.2 \o/.
- Set X11BASE to ${LOCALBASE} for recent ${OSVERSION}.
- Bump PORTREVISION for ports intalling files in ${X11BASE}.

Chase the GNOME X11BASE to LOCALBASE move, and fix the build with the
new freetype2 where needed.

Submitted by:   mezz, ahze, pav, and many others
Approved by:    portmgr (implicit, kris)

Get rid of FOO_DEPENDS=...:target and depend on parent build that should solve
with the failure in pointhat. Change the prefix from X11BASE to LOCALBASE.
Bump the PORTREVISION.

Reported by:    kris
Discussed with: marcus

- Add header in these *-reference ports.
- Fix a few of pkg-descr by chase the rename.
- Move all PORTREVISION and PORTEPOCH to top with ?=.
- Put USE_X_PREFIX back in, but under REFERENCE_PORT, and remove PREFIX? and
  USE_XLIB. This fix ports to use the correct mtree when you change the prefix,
  for example:

        Incorrect: (Without USE_X_PREFIX)
        ================================
        # cd /usr/ports/x11-toolkits/gtk20
        # make -V MTREE_FILE
        /etc/mtree/BSD.x11-4.dist
        # make PREFIX=/tmp/foo -V MTREE_FILE
        /etc/mtree/BSD.local.dist <-- Here...
        ================================

x11-toolkits/gtk--2 -> x11-toolkits/gtkmm20
x11-toolkits/gtk--2-reference -> x11-toolkits/gtkmm20-reference

Rename this ports to use the real vendor package name. The advantage of this
is to allow our users' keyword search works and easier for users to file the
Bugzilla report when they use our name of ports. Debian, Gentoo, NetBSD and
other OSs have the correct package name, but not in our ports tree.

My team, FreeBSD GNOME Team, have agreed with it.

As for other ports, chase the rename.

PR:             ports/97985
Repocopy by:    marcus