Blender Git Loki

D1171: Use GHash for BHead idname lookups

This patch avoids looping over bhead's linked list when looking up values by name.

Used during appaned and library loading.
Gives noticeable overall speedup loading files that used libraries. (nearly 2x on some Mango files)

Cleanup: refactor header lookups into functions

Cleanup: use POINTER_OFFSET macro

Add refcounting and shallow copy to AssetEngine.

Reason is, we want operator to 'inherit' ae instance from spacefile too.

added different constraint types which can be applied between clusters, with sub object groups meshes from different objects are converted to clusters automatically, so you can have in a limited way different constraint types between different objects

Fix initialization of AssetEngine type in new filebrowser.

2D lowres smoke

Minor stuff

Improved edge attribute caching.

Now edges should be fully restored from cache, fixing edge display.

Omit hair path lengths for anything but the first sample.

We can safely assume that paths don't change their lengths. This might
safe some cache space.

Merge branch 'asset-experiments' into asset-engine

Revert "Squashed commit of asset-experiments branch."

This reverts commit 3bb63a1ffb75f52f7a9e02940da7a333325be430.

Squashed commit of asset-experiments branch.

Merge branch 'master' into experimental-build

Fix for particle pathcache caching: have to check the psys->renderdata
pointer to figure out if we are evaluating with render settings.

Remove inserted keyframes if transform was cancelled

Merge branch 'master' into asset-experiments

Merge branch 'master' into temp-ghash-experiments

Merge branch 'gooseberry' into temp_motionpaths

Fix for some archive checks to make sure we don't access invalid data.

This can happen if the archive file cannot be opened for some reason.