[Ohrrpgce] SVN: teeemcee/10059 Add ENUM BrowseFileType, replacing oh so many magic constants

[subversion at HamsterRepublic.com]

teeemcee
2018-03-01 04:47:47 -0800 (Thu, 01 Mar 2018)
130
Add ENUM BrowseFileType, replacing oh so many magic constants

And renamed br.special -> br.filetype.
Removed unused type 1 (BAM).
---
U   wip/allmodex.bas
U   wip/audioedit.bas
U   wip/browse.bas
U   wip/browse.bi
U   wip/common.rbas
U   wip/custom.bas
U   wip/customsubs.rbas
U   wip/drawing.bas
U   wip/editedit.bas
U   wip/game.bas
U   wip/mapsubs.bas
U   wip/reloadedit.bas
U   wip/scriptedit.bas
U   wip/sliceedit.bas
U   wip/subs4.bas
U   wip/textboxedit.bas