Stand alone fix for non-string keys in map with references. Cglib dependencies made optional, but added to morphia/pom.xml
Merge pull request #24 from mutyonok/reference_in_map

Stand alone fix for non-string keys in map with references. Cglib depend...
Added check for loglevel to avoid unnecessary string builder overhead in case no annotation is found and default mapper is used.
Merge pull request #25 from nikos/master

Check for debug logging in case default mapper is used