Prepare for a new Slovenian translation.
Add Slovenian translation (ticket #3643).
"Output" property page: Remove some dead code.
"Output" property page: "Shader" and "Rotation" were sometimes wrongly displayed as unavailable for "Sync renderer".

This commit fixes #3672.
Use UINT_MAX instead of -1 casted to UINT when the doc mentions 0xFFFFFFFF.
Submodules.txt: Improve guide to avoid problems.
CDX9AllocatorPresenter: Initialize members.
FakeFilterMapper: EnumMatchingFilters was always returning E_NOTIMPL.

A "return" statement was missing.
FakeFilterMapper: Various cosmetics.

Make sure that static member variables are easy to spot using the "s_" prefix.
Updated LAV Filters to 0.59.1-5-f74c5c2 (custom build based on stable version 0.59.1).
Update Changelog.txt
Get rid of comma in delete statements.
Be consistent with NVIDIA name.
Installer: Use Inno Setup Preprocessor's `AddBackslash` function.

Also bump the required Inno Setup version in VSFilter's installer.
build.bat: Add error checking when extracting the DX cab files.

Also allow `EXPAND` to show info when doing its job.
Indentation improvements and trim trailing spaces from comments.
No need to nullify a member variable in a destructor.
Add missing license headers.
CID 966234.
CID 966348.