[Ohrrpgce] SVN: teeemcee/8827 By default show an error if finddatafile/dir fails. And slight showerror

[subversion at HamsterRepublic.com]

teeemcee
2017-06-06 23:54:42 -0700 (Tue, 06 Jun 2017)
102
By default show an error if finddatafile/dir fails. And slight showerror and notification improvements
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U   wip/allmodex.bas
U   wip/common.bi
U   wip/common.rbas
U   wip/custom.bas
U   wip/editrunner.bas
U   wip/mapsubs.bas
U   wip/sliceedit.bas
U   wip/slices.bas