openbor Tools

- Experimental script function options, opens the options menu.
- playerindex can be changed via changeentityproperty
- add current_stage, current_set, current_level to changeopenborvariant

- Bug fix: Script function free did not work.

- Fix drawmethod centerx and centery for screen.
- Add nosave abd nofadeout as level command.

Add nopause, nosave, noscreenshot to openborvariant/changeopenborvariant. (Scripted cut scene, etc).

- Script function shutdown (exit game).
- Add several openborvariants properties.

Fix a mistake in previous update (relback=1 after 'PRESS START' was changed to 0 by mistake).

- Experimental command skiptoset in levels.txt, skip system menu and intro directly to a specific set, for advanced usage.
- skipselect command now allow empty argument list, used to by pass the default select screen without forcing the player to choose a character.

Pad bitmap struct same as screen for psp, just in case.

- Add missing else in function anim_list_delete.
- Enable @include for level txt.

New command @include, parse a text file for model txt.