A preliminary patch for blender 2.47

* partial GHOST implementation (taken over from my old ZETA port)

(no keyboard interaction; commented in the code)

* scons build system configuration file (haiku1-config.py)

with lots of commented dependencies

* blender runs "fine" as in it starts and allows for mouse interaction

* downside: splash screen and menus don't appear correctly, respectively not at all

due to the missing double buffering implementation in MesaSoftwareRenderer; or lets say that is my suspicion. (IIRC I had to massage ZETAs BGLView implementation from Mesa too, to get splash and menus to work for the 2.42 port)

Requirements (TODO add to portlog page itself):

* python, scons, libjep, libtiff, SDL

Usage:

* apply the patch

* from the blender 2.47 source root: scons

(this will create a build-haiku1 directy next to the blender source directory where you can also find the binary afterwards)

All this was written from memory. No guarantee for completeness.

Patch: http://ports.haiku-files.org/browser/haikuports/trunk/media-gfx/blender/blender-2.47-haiku.diff?rev=368