J. Map statistics

J.   Map Statistics
-------------------
Full-debug Crawl builds (this does not include normal Crawl builds
that have wizard-mode) can produce map generation statistics. To
generate statistics, run crawl from the command-line as:
crawl -mapstat
This will generate 100 Crawl dungeons and report on the maps used in a
file named "mapgen.log" in the working directory.
You can change the number of dungeons to generate:
crawl -mapstat 10
Will generate 10 dungeons. If you merely want statistics on the
probabilities of the levels, use:
crawl -mapstat 1