Blender Git Loki

keep ob->flag and ob->base_flag in sync, else there were problems

Tool System: use release_confirm for gpencil

Also rename some grease pencil tools.

Tool System: add shear and to-sphere tools

Use default armature of Modifier

By default try to use the armature of first modifier, but allows to select different armatures.

This is required for special configurations with several armature modifiers.

Fixed chained line type display control

Build environment: Enable bzip2, lzma and sqlite for Python on Linux

New parameter to select armature in Automatic Weights op.

Before, the operator always used the armature of the modifier, but now it's possible to have several modifiers, so it needs a parameter to select the armature.

Fix directional object matrix error

3D View: split object/pose box & lasso select

Also fix error in lasso select with multiple pose objects.

3D View: split object/pose border select

No functional change, duplicate function for easy diffing.

Changes coming next.

Directional light control object ok, fixing file rw

Fixed dropdown list reference lost issue.

Normal controlled normal thickness for software is ok. No direction and position variation.

Merge branch 'blender2.8' into greasepencil-object

GP: Use custom api to get material

GP: Revert replace custom function by standard API

Using custom api breaks material at object level

Software normal control thickness for non-chain situation

Merge remote-tracking branch 'remotes/origin/blender2.8' into soc-2018-npr

# Conflicts:
# release/scripts/addons
# release/scripts/addons_contrib
# source/tools

PyRNA: all optional args now must be keyword args

In some cases the RNA API should be updated to make arguments use the
'required' flag, instead of adjusting Python scripts.

See T47811

RNA: use required args for internal popup end API