Account for dummy tex unit and failed allocation

Approved-by: Andrey Lihatskiy <andreylproductengine@lindenlab.com>
Approved-by: Graham Madarasz <graham@lindenlab.com>
Approved-by: Simon Linden <simon@lindenlab.com>
Approved-by: Maxim Nikolenko <maximnproductengine@lindenlab.com>

MAINT-8208 [Mac] Viewer crashes when uploading certain mesh model after enabling "Include skin weight"

Error to help figuring out if error happens due to gl or memory issue

Fixed: uploading JPEG image from Unicode directory fails

Approved-by: Andrey Lihatskiy <andreylproductengine@lindenlab.com>
Approved-by: Simon Linden <simon@lindenlab.com>

Fix for MAINT-8119 - this bug morphed from a packaging issue to being all about audio not playing when a media stream started.  There is some as yet, unknown interaction between the volume catcher code in the CEF plugin and the VLC volume controls. The fix for now is to add a Windows call to the VLC code that sets the process volume explicitly.  Later we will address the volume catcher code, move it to a common spot so both CEF and LibVLC can use the same bytes

Fix for MAINT-8148 - AVI fails to play. For Windows, the x-msvideo MIME type was pointed at CEF which is unable to play it.  Switching that to LibVLC made it work as expected. It was already switched on macOS