[Ohrrpgce] SVN: teeemcee/9083 Add experimental ctrl+F8 menu to change the graphics backend at runtime.

[subversion at HamsterRepublic.com]

teeemcee
2017-07-25 14:43:14 -0700 (Tue, 25 Jul 2017)
205
Add experimental ctrl+F8 menu to change the graphics backend at runtime.

This key combination is probably temporary, although I'd like one linked
to an options menu available everywhere in Game and Custom
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U   wip/allmodex.bas
U   wip/backends.bas
U   wip/backends.bi
U   wip/custom.bas