Changed spell_by_name() so that even if partial matches are allowed,

exact matches are still prefered over partial matches.

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@5591 c06c8d41-db1a-0410-9941-cceddc491573

Created by  zelgadis  on June 8, 2008
JONME7DLFI3MIAOJTS4WNGBDDDXYB2OBAIWTXORIEO7FYWMLELJQC
Change contents