VarAccess are linked to the proper declaration
* JavaRecognizer.Context is now a linked list and contains the definition of each valid identifier
* MemberSelect now inherit from VarAccess
* some dummy declarations remaining:
    - for members of other classes
    - for members of this class not yet parsed (with correct modifiers though)
private methods and fields renamed in python
Merge branch 'master' of github.com:Angayani/GOOL

Conflicts:
	src/gool/GOOLCompiler.java
	src/gool/generator/python/PythonGenerator.java