[Ohrrpgce] SVN: teeemcee/9863 Fix pal1browser throwing errors in arbitrary-size sprite editor

[subversion at HamsterRepublic.com]

teeemcee
2017-12-05 04:13:02 -0800 (Tue, 05 Dec 2017)
226
Fix pal1browser throwing errors in arbitrary-size sprite editor

Added pal16browser overload which takes a Frame ptr as argument; it no longer
depends on sprite_sizes
We need to stop using sprite_sizes, so this is useful work.
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U   wip/customsubs.bi
U   wip/customsubs.rbas
U   wip/drawing.bas
U   wip/enemyedit.bas