Please review the fix fro issue #188107

Issue #*188107* 
<http://netbeans.org/bugzilla/show_bug.cgi?id=188107>-Links to external 
classes not working:
http://netbeans.org/bugzilla/show_bug.cgi?id=188107

Fix: http://hg.netbeans.org/main/rev/a40f76f7d03f

The navigation in NB 7.0 is base on the type reference. In NB 6.8 the 
navigation tried to find all elements with the same as user click on. 
Due to change of approach some cases stop work. One of the cases is, 
when php doc for a method contain @return object. Which means that can 
return whatever.

The fix helps to improve this situation and the object type, translate 
to the class, where the method belongs and the object type is unknown. 
This approach is used in some libraries like PHP Active Records.

Risk: None, it works for specific case, in which NB now don't offer 
anything.