Pica/CommandProcessor: Fix vertex decoding if multiple memory areas are accessed for different attributes.

This effectively adds support for a lot texture formats in the rasterizer.

This was caused by the framebuffer display widget not checking whether we are actually in a valid emulation state or not.

This is useful when doing crazy stuff like inheriting from BitField.

Clean up some warnings

Add a clone of std::make_unique and revert C++14 requirement

SaveData: Added some documentation to FormatSaveData

Properly erase/remove a DebuggerObserver

armemu: Narrow the scope of some variables in handle_v6_insn

armemu: Get rid of bitwise parenthesis warnings

GSP_GPU: Shut up FlushDataCache

SystemSaveData: Fixed a typo that was segfaulting

armemu: Set GE flags properly for SSUB16, SADD16, SSAX, and SASX.

armemu: Fix USAT16.