Material taskpanel: word wrap in 'Nota' label

Fix bug on delete (when active view is not View3D) - 2nd try

Fix bug on delete (when active view is not View3D)

Renderables: part::feature - convert freecad colors to rgba

Rendermesh: test if adjacency is not empty before using it

Luxcore: allow engine selection

To be finished (mem cleaning)

(as they create them...)

...and not bare SharedMemory, in order to enforce naming policy

(especially for Linux: "l" can actually resolve into np.int64)

This reverts commit a315e2d7708e8f2dd1e84d3691cd3f8cb9f8435f.

1st attempt, some more work needed

(partial, the main separate_components has been kept)

1st attempt not fully operational

Works, but there must be a bug (too many tags)

Rendermesh mp: fix sort in build_pairs_np

Rendermesh - improve multiprocessing autosmooth