final testing for 2.13.6

[Graham Percival]

Ok, we think that Jan and I are finishing making major changes to
GUB.  The versions in
  http://lilypond.org/~graham/
will become official if I get one person confirming it on OSX and
one person confirming it on windows.  The regtests look good.


The next thing I investigate will be the size of the test output
(it's now 4 times the 2.13.0 size!), but that won't require
testing.  I'll ask for testing of 2.12.3 when that becomes
available.

To the best of my knowledge, nobody is working on the snow leopard
issue, so if you're at all interested, please do so.

Cheers,
- Graham