gimp: initial add 2.6.11

* based on oe-classic [1]-[2]
* build tested incremental & from scratch in angstrom environment
* run tested on overo

[1] http://cgit.openembedded.org/openembedded/tree/recipes/gimp/gimp.inc
[2] http://cgit.openembedded.org/openembedded/tree/recipes/gimp/gimp_2.6.8.bb



Signed-off-by: Andreas Müller <schnitzeltony@googlemail.com>
Signed-off-by: Koen Kooi <koen@dominion.thruhere.net>