Increase xp modifier for Snorg.

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@5810 c06c8d41-db1a-0410-9941-cceddc491573

Created by  j-p-e-g  on June 14, 2008
2QVYB344D5ACPD2ZTKAYJHC54AUETODV4EU5R7RFJ5S426XSBT5AC
Change contents