Makefile: Added integration-est target and JAVA_TOOL_OPTIONS to set the correct file encoding

Conflicts:
	Makefile
SMACK-395 Socks5BytestreamManager.establishConnection(): Don't bail out with an Exception uf the local XMPP service does not support Service Discovery (e.g. talk.google.com). Instead remember the Exception and give the local proxy (if enabled) a chance.
Also compute the digest only if it's really needed, that is when streamHosts is not empty.

git-svn-id: http://svn.igniterealtime.org/svn/repos/smack/trunk@13440 b35dd754-fafc-0310-a699-88a17e54d16e