[Ohrrpgce] SVN: teeemcee/9814 If there's an "import" subdirectory, default to it in browse() in Custom

[subversion at HamsterRepublic.com]

teeemcee
2017-12-01 06:30:21 -0800 (Fri, 01 Dec 2017)
140
If there's an "import" subdirectory, default to it in browse() in Custom

To make it more obvious that there is graphics/music/sfx provided.
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U   wip/browse.bas
U   wip/browse.bi
U   wip/custom.bas
U   wip/customsubs.rbas