Blender Git Loki

Patch from Ejner Fergo: enhancements to install_deps.sh.
Mostly, it:
* Adds numpy and opencollada
* Merges both Suse and Fedora/Redhat into a single func (not sure this is a good idea, but would have been to painful to undo this).

Notes:
* I changed a bit how numpy is handled, so that the script does not try to build it when py3.3 was installed from package!
* Bumped oiio 'magic number', as now trying to use libtiff5 means we have to rebuild everything using tiff!
* Only made a quick test on my own system, but Ejner made quite some extensive ones, so it should be safe.
* I�??m not sure keeping on extending that horrible bash thing is a good idea. Shell scripts are nice for small, limited stuff, but I personnaly find that one (over 53ko!) unreadable and a pita to maintain. Further more, doing the same for windows would mean to rewrite everything in another language... I have started work to port this as a py3 script, so that we have a nice structure (classes...) easy to extend/tweak/implement in various OSs/etc.!