Merge branch 'devs/cedric/emile'

Here come a major code refactoring. There is still work to be done, especially on Ecore_Con_SSl
and also image compression, but it is already an improvement over current situation. Further
development should happen in master.

Emile does provide a library to put together serialization, compression and ciphering. It is a
low level library and can be use by anything above Eina.