Blender Git Loki

GP Build Modifier: Rename direction -> transition, and rearrange UI panel

GP Build Mod Fixes

* Sequential mode now works - Accidentally removed the important tallying
step when cleaning up the code earlier

* Typo - Was looking for "direction" values in the wrong field

Fix crashes

* Forgot to remove strokes from frame before deleting their data
* Typo - Used old "gps" pointer not "cell->gps"

GP Build Modifier - RNA + UI

Show an error message if a GP modifier cannot be applied instead of failing silently

GP Build Modifier: Initial WIP implementation of this modifier

It's likely that there are still many bugs here, so caution is advised.

Partially revert rBc038bbbce2b

Remaining warning in grease pencil

Merge remote-tracking branch 'origin/blender2.8' into greasepencil-object

Merge commit '3abe8b3292cf7a50a9200b95401993384df24d9a' into greasepencil-object

Note: Since grease pencil had its own subversion, and this merge brings 2.80
subversion 2 as well, the files should be saved BEFORE this commit, to be sure
that all the doversion happened.

Merge commit '3abe8b3292cf7a50a9200b95401993384df24d9a^' into greasepencil-object

Silence warnings

Please keep the code warnings-free as much as possible.

UI: Add buttons at bottom bar

Add Only Render and Lock Camera View options to bottom toolbar because use the options in panels break the drawing workflow and use a lot of space in the drawing area.

Fix error after merge

Merge branch 'blender2.8' into greasepencil-object

Merge branch 'blender2.8' into greasepencil-object

Merge branch 'blender2.8' into greasepencil-object

Move BKE_gpencil_batch_cache_alldirty()'s debug value to 66

This Makes it possible to set this without seeing all the stats in the way

Cleanup - This code shouldn't be needed anymore

UI: Rename MultiEdit to MultiFrame