Blender Git Loki

Industry Compat keymap: Switch mode order to Vert, Edge, Face, Object

Due to popular demand, this switches the number key mode order, so that it goes:

1: vert, 2: edge, 3: face, 4: object, 5: sculpt and so on

This has a number of downsides in practice, because it works less well for objects other than meshes, which now have a gap in the keymap between 1 and 4. I will try this change anyway, due to popular demand.

Also use V for viewport pie, which makes it easier to switch viewpoints on laptops especially.

make.bat: Add option to only update sources from git.

SVN takes a long time to sync even if there are no updates,
the `code_update` parameter gives the option opt out of the
SVN updates.

This is a developer option, people just wanting to build
blender and not do any development are highly recommended
to keep using the `update` method.

Edit Mesh Selection Drawing: Make sure the state of point size is enabled.

Fix T54686: objects don't occlude each other for edit-mesh select (part 2)

The previous fix 8a6414ed46f66, resolved selection picking but didn't
work for box/circle/lasso select.

- Add ED_select_buffer_utils.h for general select-buffer operations
unrelated to edit-mesh.

- Circle select still needs to cache select-id's for each update.

Cleanup: remove unused argument

Disable rendering of the orginal scene in the script.

macOS/Linux: use more standard button layout in quit dialog

Ref D3118. This matches macOS and GNOME.

Merge branch 'master' into soc-2018-npr

Fix T64762: incorrect textures for non-color images with an alpha channel

Fix T64791: light sun angle not saved

There is a deeper problem here with DNA_struct_elem_find and Lamp/Light name
aliasing, to be fixed separately.

Fix image not being marked as modified on texture paint undo/redo

Windows: use more standard button layout in quit dialog

macOS and Linux remain the same as before. Ref D3118.

Fix for Python error due to file missing from last commit

Fix use of deprecated DoF distance property

Mesh: remove Double Sided lighting option, it does nothing in the new viewport

This is legacy option from fixed-function graphics hardware, where per-vertex
lighting meant this had a significant performance impact.

Cleanup: remove unused GHOST quit dialog code

macOS: always use the Blender quit dialog, like other platforms

The same was done for Windows, but some extra changes were needed to make it
work on macOS. This is required because the Blender quit dialog now contains
additional settings for image saving.

UI: Sequencer menus

- Rename Frame menu to Navigation, and move to View menu
- Add missing Zoom entry to View menu
- Move the Snap/Offset items to the Transform menu
- Remove Crossfade Sounds from the Strip menu, now that it is in the Transitions menu
- Added more separators where it makes sense

Suggestions by Peter Fog (tintwotin)

Industry Compat keymap: Sequencer fixes

- Use consistent animation controls
- Use consistent keys for Select More/Less & Select Linked

UI: Sequencer menus

Add missing menu entries:

- Select Box
- Sound Crossfade
- Toggle Meta
- Gap Remove

Also:
- Rename menu entries to use Playhead rather than the ambiguous Frame
- Use icons for the rest of the Add menu categories

Thanks to user tintwotin for pointing out the missing items