Blender Git Loki

Fix camera gizmo sensor check

Also correct wrong but harmless assignment.

Cleanup: style

Cleanup: redundant NULL checks

Also use unsigned shifting for values not in int range.

Revert "Win32: Use the nicer looking blender-drawn confirmation message box when"

This reverts commit 60d6eb0b5d578eb02c5f1f31cb51a6cbeea6ee6f.

There is already a full patch (D3118) by brecht for this, will leave it up to him.

Cleanup: duplicate include

Merge branch 'master' into blender2.8

Cleanup: style

Win32: Use the nicer looking blender-drawn confirmation message box when
quitting with unsaved changes, instead of an ugly messagebox

try to avoid crashes due to excessive usage of immediate draw buffer

since the buffersize is limited to 4 MB (but it effectively crashed above usage of 3 MB,
probably due to 4 bit padding), there is a hard limit of usage ratio to be taken into account. The debug drawer counts the bytes used and increases an epsilon value as softlimit
first. This filters out short lines / very close verts and reduces the buffer usage. If that is not enough, there is a hard limit at 95% buffer usage. Then line drawing is skipped.

Fix file browsers thumbnail selection with tablet failing, after recent changes.

Fix T58244: Proportional editing center is wrong

The global center was not calculated at all. Now a center is calculated using the selected points

Fix T58267: node socket grabbing not working well with box select tool.

got physics visualization operational again

kudos to hypersomniac for pointing me to the debug draw api

Fix T58235: broken baking of tangent space normals.

Annotation: Replace ALT key to CTRL for Eraser

This makes the keymap consistent with Grease Pencil.

attempt to fix pack group and export to objects

StudioLight Editor: Add copy settings and overwrite prompt

Copy settings let users create variations more easily.

Ovewrite prompt is there to be able to edit already existing studiolight.

StudioLight Editor: Fix defaults

StudioLight: Renaming stuffs

StudioLight: Add a 4th light to adjust lighting

There was a bug due to non-aligned struct in the DNA that prevented us
to increase the size of the userdef light array.

Since the studio lights are now presets and stored in external files,
there is no need to keep backward compatibility with theses lights.

Remove the old array and create a new one.

Add blue tint light for specular.