If butchering with a swapped weapon is interrupted, then switch back

to the non-butchering weapon as soon as the player is safe again. Enabled by setting option "swap_when_safe" to true.

Also, fixed a bug where "not switching back" message wasn't always being given when butchering was interrupted.

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@5354 c06c8d41-db1a-0410-9941-cceddc491573

Created by  zelgadis  on May 30, 2008
P25D567E2UEAQHNI7LAZPNY7KAI3J4OE77YKLWOIEEALC5RREJHAC
Change contents