Blender Git Loki

Cleanup: Rearrange Vert and Edge slide functions

And make `trans_mesh_customdata_correction` a more generic utility.

Fix T77116: Current frame indicator text color hardcoded

Draw the text with the "header text highlight" theme color, which is
rarely used, making it a good candidate for this special case.

Differential Revision: https://developer.blender.org/D7897

Fix T77596: UI: Correct "offset even" location in solidify modifier

This only applies in the "simple" solidify mode.

Differential Revision: https://developer.blender.org/D7967

Cleanup: remove unnecessary code

This got committed due to a stupid mistake of mine, it does not belong
there at all.

GPencil: Fix compiler errors after merge

Cleanup: removed trailing spaces from `install_deps.sh`

No functional changes.

x264: update URL and hash in versions.cmake

The old URL did have a Git commit hash in it, but apparently the server
was ignoring it and only used the `master` that was also mentioned in the
URL. As a result, every new download would get the latest version from
the `master` branch, invalidating the SHA256 checksum.

I replaced `master` with the actual commit hash. This should make the
situation stable.

No functional changes.

Alembic: remove HDF5 support from CMake files

This is a follup to 0c384362272.

No functional changes to Blender, just the build scripts.

Merge branch 'master' into greasepencil-edit-curve

Merge branch 'master' into greasepencil-object

Fix T77871: GPencil masked points fails with previous point

If selected a point for masking, the previous point that is part of the same segment was included.

This bug was in Sculpt and Vertex paint modes because the code was very similar.

Merge branch 'master' into cycles_texture_cache

Merge branch 'master' into soc-2020-io-performance

Alembic: remove support for HDF5 archive format

Alembic is not a single file format, it can be stored in two different
ways: Ogawa and HDF5. Ogawa replaced HDF5 and is smaller and much faster
(4-25x) to read ([source](http://exocortex.com/blog/alembic_is_about_to_get_really_fast)).

As long as Blender has had Alembic support, it has never supported the
HDF5 format in any release. There is a build option `WITH_ALEMBIC_HDF5`
that can be used to enable HDF5 support in your own build. This commit
removes this build option and the code that it manages.

In the years that I have been maintainer of Blender's Alembic code, I
only remember getting a request to support HDF5 once, and that was to
support very old software that has likely since then been updated to
support Ogawa. Ubuntu and Fedora also seem to bundle Blender without
HDF5 support.

This decision was discussed on
[DevTalk](https://devtalk.blender.org/t/alembic-hdf5-support-completely-remove)
where someone also mentioned that there is a tool available that can
convert HDF5 files to the Ogawa format.

Fix text after '|' being right aligned in the ID selector

Only use this to right align libraries when they are added to the name.

Caused by d62bbf4079323.

Fix T77869: GPencil material preview not visible before frame 2

The problem was related to the change introduced in commit 11ba9eec7017

As now the keyframe is only visible if the keyframe is greater or equal than current scene frame and the preview file had all keyframes in frame number 2, it was not used in frame 0 or 1.

Now, the keyframes have been moved to frame 0.

Various UI messages fixes...

Cleanup: unused headers, minor edits in comments

Since fstream was removed, these headers are useless here.

Merge branch 'master' into greasepencil-edit-curve

Merge branch 'master' into greasepencil-object