Log Message:
Update gxemul to 0.4.7.2, and also pull some fixes from upstream trunk
for running several NetBSD ports properly on the emulator. PR pkg/41742

Discussed with and okay'ed by wiz@.

Upstream changes:

The changes between release 0.4.6.6 and 0.4.7 are:

 * Motorola 88K emulation is now complete enough to run a guest operating
    system: OpenBSD/mvme88k 4.4.

    A big thank you goes to Miod Vallat, who sent me physical 88100
    documentation, via snail mail. This has been invaluable when implementing
    the 88K emulation mode.

The changes between release 0.4.7 and 0.4.7.1 are:

 * Applying a man page hypenation patch from Jonathan Wiltshire.
 * Minor documentation errors fixed.
 * Some more missing M88K instructions added.
 * NetBSD/hpcmips can now be installed and run using serial console (i.e.
    without -X), in addition to using the framebuffer.

The changes between release 0.4.7.1 and 0.4.7.2 are:

 * NetBSD 5.0, OpenBSD 4.5, and HelenOS 0.4.0 have been released, and the
    guest OS page has been updated to reflect this. (Not all versions and
    architectures work; the versions listed on the guest OS page are the latest
    ones that have been tested.)
 * A bug has been fixed which prevented configuration files from being used.

Patches pulled from upstream trunk:

patch-aa:
Applying a patch for setting the ARCBIOS OSLOADPARTITION environment
variable in a more correct way.
http://gxemul.svn.sourceforge.net/viewvc/gxemul?view=rev&revision=5473
This makes NetBSD/arc work on PICA emulation with VGA console.
(more proper fix than the previous patch-aa)

patch-ab:
Better fix for the Cobalt board ID number.
http://gxemul.svn.sourceforge.net/viewvc/gxemul?view=rev&revision=5485
(fixes in the previous patch-ab has been integrated in the latest release)

patch-ac:
Applying a patch which makes NetBSD/hpcmips work well with the clock again.
http://gxemul.svn.sourceforge.net/viewvc/gxemul?view=rev&revision=5472

pkgsrc changes:
- update MASTER_SITES and HOMEPAGE (now they are in sourceforge)
- update PLIST (add share/doc/gxemul/unsupported.html)