[Ohrrpgce] SVN: teeemcee/8178 Add find_file_portably() and is_possibly_absolute_path()

[subversion at HamsterRepublic.com]

teeemcee
2016-10-29 03:08:52 -0700 (Sat, 29 Oct 2016)
286
Add find_file_portably() and is_possibly_absolute_path()

find_file_portably() does a case-insensitive search for a file/directory
and also handles some other platform differences, and is intended to
allow portable file path in games (which are never used currently).
Lots of testcases.
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U   wip/util.bas
U   wip/util.bi