Blender Git Loki

Small fixes to crashes.

install_deps: Fix OIIO and OSL build with OpenEXR

Root path variables for those libraries is now using the 'standard' naming
scheme.

With tweaks/cleanups from @mont29.

Reviewed By: mont29

Differential Revision: https://developer.blender.org/D13591

BLI: fix Vector.prepend declaration

Using `&&` there was a typo. With `&&` the `prepend` method
could not be called with a const reference as argument.

Added test cases for remapping.

Modified st->id_remap to new interface.

Fix T93570: VSE image transforms in preview dont autokey

This was basically not implemented, do this via
`ED_autokeyframe_property` in a new dedicated function in
special_aftertrans_update.

Maniphest Tasks: T93570

Differential Revision: https://developer.blender.org/D13608

Docs: use doxygen formatting for DNA

Differentiate doc-strings from title/section text.
Also use explicit doxygen references to struct members
so it's not ambiguous which member is being referenced.

Note that these changes aren't complete (some files weren't touched).

Docs: use doxygen formatting for BLI

Differentiate doc-strings from title/section text.

Docs: minor correction to doc-string

The text editor no longer accumulates changes.

Fix T94254: Crash using view_all operator in VSE

Caused by `NULL` dereference in `SEQ_meta_stack_active_get()`.

Check if `Editing` is `NULL` before accessing meta stack.

Fix: Meta strip not created with alpha over blend mode

Meta add function wasn't updated. All strips now use alpha over
blending, so set it in `SEQ_sequence_alloc()`.

Cleanup: Remove more texture nodes preview handling

Similar to the previous commit, this allowed removing a function to set
a single pixel of a node preview.

VSE: Clamp sound strip when adding movie strip

When adding multiple movie strips and sound stream is longer than video,
this results in gaps between video strips, which is undesirable.

Cleanup: Remove more no-op node preview code

This is a follow-up to rB43875e8dd1d76ee, removing some
processing of non-existent node previews in the shader and
texture nodes systems.

Cleanup: Const arguments, remove unused argument

Added property to switch between free handle
toggle and adjacent handle moving.
Also added option to choose key for the functionality.

Added option to define select threshold

Clamped t between 0.1 and 0.9

Merge master

Clamped t to not let curves go to infinity