As a measure of refactorization of the code and to prepare to the
development of dhtnet, the following changes aims at seperating
jami-specific code to connectivity-specific code.
GitLab: #778
Change-Id: Iaa08100f7d61c80292f039a5aae66819cc85b0e9
* rename namespace from ring to jami
* rename logs methods from RING_* to JAMI_*
* rename RING_VIDEO to ENABLE_VIDEO
Change-Id: Ic98498652d7059fafe58a96220d565bcdfa53658