[Ohrrpgce] SVN: teeemcee/8663 Add get_data_dir(), and add Editor Slice Editor option to the spam menu

[subversion at HamsterRepublic.com]

teeemcee
2017-04-20 08:29:58 -0700 (Thu, 20 Apr 2017)
174
Add get_data_dir(), and add Editor Slice Editor option to the spam menu

Currently this is just the slice editor with no differences aside from
allowing negative lookup codes
---
U   wip/common.bi
U   wip/common.rbas
U   wip/custom.bas
U   wip/sliceedit.bas
U   wip/sliceedit.bi