Also make it possible to build libshout without threads, albeit without locking
in the resolver or avl trees.
New option --disable-pthread too.
svn path=/trunk/avl/; revision=4411
interface is a reserved word, so we've renamed one variable. There's
also no sethostent on win32, and Oddsock seems to think we need
DeleteCriticalSection instead of DestroyCriticalSection. I was unable
to figure out from msdn.microsoft.com why this was, but I'll trust
Oddsock's judgement.
svn path=/trunk/net/; revision=2194
