[Ohrrpgce] SVN: james/11958 Add "max map id" scripting command

[subversion at HamsterRepublic.com]

james
2020-08-20 13:53:13 -0700 (Thu, 20 Aug 2020)
155
Add "max map id" scripting command

For those times when you want to loop through every map, and don't want to hardcode the number of maps into your script
---
U   wip/const.bi
U   wip/docs/plotdict.xml
U   wip/docs/plotdictionary.html
U   wip/plotscr.hsd
U   wip/scriptcommands.bas
U   wip/whatsnew.txt