Use the right vertex/index addr in NullGpu.
Error and reporting for sceGeBreak's second param.
Oops, fix return of sceGeBreak(0).

Needs to match dlist ids.
A paused list will allow a context save.

Just not stall, drawing, etc.
Preseve offsetAddr on stall, instead of reset to 0.

Only for new lists is it reset to 0, afaict.
Merge pull request #3873 from unknownbrackets/ge-minor

Improve sceGeBreak and offsetAddr handling