Return SCE_KERNEL_ERROR_ILLEGAL_PRIORITY when priority < 0
Use a separate latch for osk dialog.
Add ERROR_LOG for Illegal Priority
Add comment "priority = -1 is valid"
Delay as sas core for p3da
UI : Shift in-menu items
Render-to-texture : Remove no longer valid game list comments
Only use a separate btnmake.
Fix savedata.
Better disassembly resizing
Fix texcache rehash backoff.

If a texture was reused (with other textures in between) several times per
frame, it would be rehashed more frequently than it should be.

Also tries to avoid rehashing several textures on the same frame if they
do not change.
Cut down texcache cap to 512.

This will make textures rehash 4x more often if they seem to be static.

Previously, 2048 for a 30 fps game meant 69 seconds before it would notice
a change.  This is really long for fonts that get missed sometimes.

This takes that down to 17.5 seconds.  Still quite a while, but something
a normal person is much more likely to wait for.

Hopefulyl won't hurt performance much normally.
Merge pull request #3990 from unknownbrackets/texcache

Rehash textures a bit more often when static
Add errors and rescheduling to sceDmac*.

The functionality seems pretty straight-forward.
Mostly implement sceDmacTryMemcpy().
Add basic support for rewinding (not enabled.)
While unthrottled, checkpoint rewind less often.
If loading state fails, rewind instead of reset.
Make save/load fail strings more consistent.
Savestates now work okay between git versions.