windows: Ignore key/mouse input while menu focused.

This prevents arrow and shortcut keys from being considered inputs to the
game or UI.
Don't call SetTexture() in clear mode.

It's just a waste of time, the game is probably being lazy.
Change the self message for separate reporting.
Merge pull request #5161 from unknownbrackets/texcache2

Don't call SetTexture() in clear mode
Merge pull request #5160 from unknownbrackets/ui-tweaks

windows: Ignore key/mouse input while menu focused
Report block transfers we don't support.

Ones involving framebuffers.
Merge pull request #5162 from unknownbrackets/reporting

Report block transfers we don't support