Fixed listener call issue spotted by @scrawl
Do not allow magic/combat stance unless magic/inventory window are accessible
Update readme.txt

Straightened out the command line options area.  Some lines were broken up badly.
Merge remote-tracking branch 'potatoesmaster/bug-839'
Merge remote-tracking branch 'corristo/patch-1'
Terrain fixes to match vanilla better - vertices need to be mapped directly to texels for colormap and blendmap (this also caused seams at cell borders), layer uv scale appears to be 8 not 10