AV Transport Service full required XML definition
AVTS description function
Merge branch 'avts' of https://github.com/mchalain/libdlna into avts

Conflicts:
	src/avts.c
AVTS manage the transitioning and the state modification
set avts response to action
extract didl API from cds.c
Merge branch 'didl' into avts
add didl source files
Merge branch 'didl' into avts
get media metadata