Better to have its own directory.
Add an interface to return the current framebuffer.
Add a quick and dirty render preview.

Now it's actually semi useful already.
Warning fixes.
Support render res. above 1x in ge debugger.
Draw a checkerboard pattern behind the image.
Center the display on top of the checkerboard.
More carefully log unknown GE commands.

Need FLAG_EXECUTE or they won't log, we were only getting the
ReapplyGfxState() ones before.  Let's skip 0 to not log those as well.
Initialize some psmf values.

This was causing glitches when loading game A and then game B.
Detect tricks with depthbuffers and report them.

Tons of games share framebuffers though, but data is good...
Support 16 bit buffers in the GE debugger too.
Support flipped and not flipped buffers.
Fix 32-bit ge debugger (broken cond vars.)
Merge pull request #3889 from unknownbrackets/debugger

Initially usable GE debugger