Add an option to Enhancer to copy annotation attribute from superclass

[bric3]

As of today CGLIB does not support annotations.

• First step would be to add this feature
• Enable the option to copy annotation attributes for proxies

[abailly]

This should be our first priority, I think.

[bric3]

Indeed though on CGLIB I only used the enhancer API. But for annotation support I guess we need to update CGLIB with ASM 4.