Refactoring in gen_java.py script

- most of string templates have been grouped in one part of the file (lines 6xx-7xx)
- logging of incoming and outgoing objects
- class code streams are stored in _ClassInfo_-object and are freed after code generating
- eliminated _FuncFamilyInfo_ class
- minimized searching of class objects
- extracted some methods and moved them to corresponding _XxxInfo_ class
- some miscellaneous stuff
- also added wrapping of other _bioinspired_ module headers