[Ohrrpgce] SVN: teeemcee/11050 A little error code cleanup, mostly just converting "debugc errShowBug"

[subversion at HamsterRepublic.com]

teeemcee
2019-03-23 01:03:00 -0700 (Sat, 23 Mar 2019)
139
A little error code cleanup, mostly just converting "debugc errShowBug" to "showbug"

Also convert a couple silent errors to showbug calls.
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U   wip/allmodex.bas
U   wip/lumpfile.bas
U   wip/mapsubs.bas
U   wip/oldhsinterpreter.bas
U   wip/scripting.bas
U   wip/slices.bas
U   wip/yetmore2.bas