Bug fixes

• # 5645 Fix temporary hangs under Windows
• # 5720 Crash when removing unloaded deferred procedurals
• # 5721 face_visibility crash
• # 5723 Crash when modifying matrix while reloading a procedural
• # 5733 Watermarked deep file hangs render
• # 5743 Write time message for .ass files too short
• # 5759 Always scale past 64 threads in Windows
• # 5768 AiMakeTx should close file handles of input textures
• # 5773 Volumes missing IPR update when changing min and max parameters