Fix typo
Revert "Replace home grown Multimap with guava"

This reverts commit 872570607966a5851a8211121b1977592a1b611e.

Conflicts:
	src/main/java/zmq/PollerBase.java
	src/main/java/zmq/SocketBase.java
Remove redundant static modifier
Remove redundant encoding entry
Fix java6 build problem where req was failing with BOTTOM illegalstateexception
Merge pull request #214 from trevorbernard/master

Remove guava as a dependency