Rewritten decreasing creature health.

git-svn-id: http://keeperfx.googlecode.com/svn/trunk@1461 40a56aae-0377-11df-bfb3-7781b9cb07ea
Rewritten hold audience spell use.

git-svn-id: http://keeperfx.googlecode.com/svn/trunk@1462 40a56aae-0377-11df-bfb3-7781b9cb07ea