Make the "more" line of the spell memorization menu show the number of

available spell levels, the number of spell books which can't be read from, and the number of spells which can't be memorized due to player's species.

Make the spell memorization confirmation prompt show the number of spell levels to be consumed by memorization, and the number which will be left after memorization.

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@10042 c06c8d41-db1a-0410-9941-cceddc491573

Created by  zelgadis  on June 25, 2009
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