Lua functions for FLOORCOL and ROCKCOL are now named floorcol() and rockcol() instead of floor_colour and rock_colour, to match the convention for other .des headers (dpeg).

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@7547 c06c8d41-db1a-0410-9941-cceddc491573

Created by  dshaligram  on November 23, 2008
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