clone() methods sytematically took a reference on the freshly
created object whereas these had their reference counter set to one
already.

This commit prevents the wrapper generator take an extra reference
by passing false as 'takeRef' argument of cPtrToSharedPtr().

This commit also introduce a new property for abstractapi.Method
objects, which tells whether the method returns an allocated object.

(cherry picked from commit 8a946552)

This reverts commit 7d621c5b and
proposes a way to fix the generation with Python 2 without
breaking abstractapi's interface.

* Support of enums declared inside classes.
* Moving of Java translation code into abstractapi.py
  in order to have Java's API in the generated multi-language
  documentation.

[Abstract API] Blacklists linphone_factory_create_core_2() and linphone_factory_cerate_core_with_config_2() while parsing

This must be done since these functions must be manually wrapped for each targeted language.

[Abstract API] Blacklists linphone_factory_create_core_2() and linphone_factory_cerate_core_with_config_2() while parsing

This must be done since these functions must be manually wrapped for each targeted language.

Do not wrap IMEE + fix java wrapper compil when using -j + fixed classBl in abstractAPI tool + various fixes for jni layer of java wrapper