Fix T67008: Missing move handle and flickering in FileBrowser

Fix T67008: Missing move handle and flickering in FileBrowser

Allow split regions (child regions) to contribute to the action zones (azone) of the parent region.
This fixes the issues in file browser and also in the user preferences.

Reviewers: Severin, mont29, campbellbarton

Reviewed By: Severin, mont29, campbellbarton

Subscribers: brecht, campbellbarton

Maniphest Tasks: T67008

Differential Revision: https://developer.blender.org/D5273

Compile fixes for MSVC:
* missing include for uint typedef
* macro syntax error

Reviewers: campbellbarton, fclem

Reviewed By: fclem

Differential Revision: https://developer.blender.org/D2863

Fix T41737 using append from menu will result in error message

message in terminal was: RNA_boolean_get: WM_OT_append.relative_path not found.
Added check for existence of the relative path property which was removed from append
since it is not needed and used.

Separate operators for Link and Append.

Since the choice to link or append has been removed in the file browser operator panel,
there was no way to tell whether as a user you were linking or appending.
To fix this the proposed patch separates the operators.

Reviewers: campbellbarton, carter2422, venomgfx

Subscribers: fsiddi

Maniphest Tasks: T41593

Differential Revision: https://developer.blender.org/D770

Basic support for UNC paths on Windows

Differential Revision: https://developer.blender.org/D298

Allows users on Windows to enter UNC paths in the filebrowser and to link to .blend files on a UNC path. Functionality is limited still, we can't browse the network yet and have no support to check user rights so far.

What works:
- enter an UNC path in the file browser manually or via copy/paste
- navigation within the UNC share subfolders
- link to a file on a UNC share

What does not (yet) work:
- browse the network for computers and shares
- browse to a folder that requires entering user credentials

Contributors:
Rob McKay - original patch
Campbell Barton - style fixes

Reviewers:
Campbell Barton, Brecht van Lommel

Fix: compile error due to non-matching type and strict flags for MSVC9

This fixes a small compile error where MSVC9 complains about conversion from int to unsigned char.

Code cleanup: removed unnecessary #defines causing re-definition warnings

Fixing warnings in own recent commit

Fix: Compile error due to missing #define for MSVC9 (VisualC++ 2008)

Added some relevant #defines copied from externlibmvthird_partymsinttypes to BLI_sys_types.h so they can be used in blenlib. Made smallhash.c use the BLI_sys_types.h include rather than including <stdint.h> directly

Fix T37481: Image Sequence can't be loaded

Allow loading of image sequences in addition to single images in the open image operator

I solved it by adding the possibility to load an image sequence in the Load Image Operator.
The image user is passed in the operator customdata now as well, best solution for now, but general handling of image user still a bit weak. The offset and length of the image sequence is now calculated in the image open operator by storing all found frames in a list and sorting this list.

Reviewed By: campbellbarton, brecht, lukastoenne

Differential Revision: https://developer.blender.org/D209

Fix: tooltip when adding a new 'Excluded path' for python execution