Fix a few cases where spellbooks didn't have spells in ascending order

by level.

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@7435 c06c8d41-db1a-0410-9941-cceddc491573

Created by  dolorous  on November 10, 2008
CVSP6WXUHALGOPNOEUW6QV2XSFZWLWOTWPCDAN5AVCQ65LEXTLCQC
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