Blender Git Loki

fix for occasional crashes with dynamic fracture while freeing the modifier

crash happened with scene objects which had a freed rigidbody world but didnt set the pointer to NULL.

fix for loading splitshards to island blends and clusters properly

was necessary to skip "empty shards" properly and keep cluster index

a bit clean up and attempt to reduce dynamic fracture memory leaks

dont suppress undo save/load with dynamic any more

this seems a bit more stable, but does crash occasionally too, and may even
corrupt the blend. Workaround, open with official blender and FM is gone, save
and blend should be usable again.

fix for different constraint behavior after refracturing / reloading / param change

constraint enabled flags were changed during sim and next sim started with pre-broken
constraints this way... thus different behavior.

store constraints for prefractured mode now too in blend

this automatically creates constraints from scratch as fallback for older files

Fix T47758: rigidbody bug with constraint breaking and disable collisions.

This is a regression in Bullet, reverted the problematic change for now with
a custom patch (backported to Fracture Modifier)

allow multiple dynamic destruction with extra particles or verts

this should allow triggered dynamic destruction with different colliders at different times. Note: WIP and crashes often in relation with undo

fix attempt for some dynamic fracture rotation glitches

fix: crash when removing FM, ob->derivedFinal can become NULL in this case

keep objects completely intact with compounds and stability factor = 1

stability factor should now influence overall stability of object more directly.
This should allow to control breaking behavior of the compounds better.
As before the masses still have the biggest influence to the breaking behavior, followed by thresholds and
connection count per shard.

attempt to make compounds a bit more predictable, they should work now when colliding with passive objects too

removed a double bad level call stub, found by jensverwiebe, thanks :)

Merge remote-tracking branch 'refs/remotes/origin/blender-v2.77-release' into fracture_modifier

Conflicts:
source/blender/windowmanager/intern/wm_operators.c

Blender 2.77: Point submodules to an updated hashes

Revert "Fix button display clamping values"

This reverts commit e4e21480d6331903c90ab073746484498441e1ac.

Blender 2.77; We are now at release cycle

Sequencer: expose GL preview alpha in scene UI

While this isn't essential, accessing this setting required navigating to each scene and using render menu.
Expose in sequencer UI for more convenient access.

Fix T47807: Toggle header shortcut doesn't work