Fix 'anttasks' build.xml target

Remove ant-subdirtask since it's automatically generated from source by
the 'anttasks' target.
Fix ant-contrib taskdef
Update Eclipse configuration files
OF-764: Restore default of two days for MUC history reload
OF-764: Remove extraneous logging

No need to emit a warning message for the MUC history reload limit.
Add javac.source and javac.target to build.xml

and raise those values to 1.7

OF-466
Fix unit tests
OF-806 Flash client connection closing with invalid_namespace error
OF-786 Muc - grant membership: nickname is not stored
OF-736 Openfire should return <incorrect-encoding></incorrect> SASL failure, when not using base64 encoding
OF-116 Add a text explaining the path used for http-binding
OF-241 + OF-747 Test preparation for MUC privileges.