Add option to hide dock widget title bars

core_timing: Mark several variables as static

core: Fix a few docstrings

These are only used in this translation unit.

Expose GetSharedFont and NotifyToWait to APT:A and APT:S respectively

Improve the loader a bit

dyncom: Clarify precedence for ternary statements

dyncom: Implement missing shifts in ScaledRegisterPostIndexed, etc

Add some support for the shared page

dyncom: Handle the ARM A2 encoding of STRT/LDRT

These were also missing the shifted register case.

dyncom: Handle the ARM A2 encoding of LDRBT/STRBT.

Correctness fixes for GPU flipping and interrupts

Loader: Keep a reference to the file and pass it to the correct AppLoader, instead of loading it multiple times.

APTU: Stubbed NotifyToWait, taken from 3dmoo.

AddrArbiter: Implement arbitration types 3 and 4.

Display transfers with the horizontal downscaling flag were calculating
the wrong output size, causing them to write double the amount of data
intended. It is likely that this was perceived as correct due to a
separate bug in calculating source indices which caused the image to be
padded unless the previous bug was present.

This fixes both issues, correcting flickering issues in 3dscraft,
blargSnes and more (caused by the transfer overwriting the back buffer
which followed) as well as potentially fixing other crashes.

The code was previously appending the interrupt to after the end of the
buffer, instead of at the end.