Blender Git Loki

Merge branch 'master' into lib-link-rework-temp

Some naming cleanup.

Rework a bit new liblink code, to use our beloved memarena instead of ugly pile of malloc.

Performances are not an issue at all here, but it makes code slightly simpler, avoids
a loop over ghash of libs, avoids some potential mem fragmentation, and will be easier
with lib relocate code too in future...

Some cleanup & tweaks.

Merge branch 'master' into lib-link-rework-temp

Serious rework (again) of append/link code, to make it more generic.

Making the code in WM area more generic (will be used by relocate libs feature too in future).
And multi-append/link shall no more close & re-open lib files for each and every idcode!

Also, serious cleanup of BLO_append_... API (renamed BLO_link_..., since it links and never appends!),
main real changes there are removing the bContext arg in favor of scene/v3d (a bit more verbose, but does
not requires a valid context anymore to be able to instanciate ob/groups!). And logic behind instanciating
or not has been simplified, previous code was really obscure and sometimes redondant, from quick tests
it still works as expected.

This is temp branch for until 2.76 is over, shall be merged in master asap then.