Blender Git Loki

Some minor cleanup.

Merge branch 'blender2.8' into custom-manipulators

Fix files loading with wrong screen in 2.7x

Place holder icon

Superficial but looks buggy having no icon

install_deps: removed leftover compile_HDF5 command

It was a leftover from when Alembic with HDF5 was still officially
supported.

UV editor using new depsgraph for shadow uv

Immediate Mode / DerivedMesh: Handle UV Shadow

Depsgraph: placeholder function for COW objects query

CTX_data_depsgraph(bContext *C);

Immediate Mode: glPop/glPushClientAttrib

Rename WorkSpaceDataAssignment -> WorkSpaceDataRelation

Alembic: Removed const_cast<>, no longer necessary with Alembic 1.7.1

For more info, see my bug report at Alembic's github:
https://github.com/alembic/alembic/issues/110

Comments: Try to describe WorkSpaceDataAssignment struct better

Include class registration for scene GP panel

After the last changes in the classes registration, need add the class to the the list.

Merge branch 'blender2.8' into workspaces

Merge branch 'master' into temp-sybren-alembic

Bumped Alembic library version to 1.7.1

This provides us with a clearer API (so I don't have to use const_cast<>
in upcoming code). It also allows layering of different Alembic files,
so you can have a base file and load a separate file containing overrides.

Verbally approved by Dr. Sergey.

Buildbot: Update master config

Include ModelViewProjection matrix to use in the future

This will be used to calculate the stroke thickness

Alembic: force ALEMBIC_LIB_USES_BOOST=ON when not using C++11

Alembic requires one of ALEMBIC_LIB_USES_BOOST, ALEMBIC_LIB_USES_TR1, or
C++11, and silently defaults to the latter if the former two are OFF.

Before this change, Alembic was only built without C++11 of OpenEXR
was built at the same time. This dependency was both unnecessary and
undocumented.