mutable->isMutable
preparing tests
PA mock v.1 (it compiles)
fixed Makefile
first test
backend_volume_setall tests
backend_volume_set tests
backend_mute_set tests
improved backend_volume_setall tests
backend_card_profile_set tests
backend_port_set tests
_cb_state_changed tests
_cb_client test
some backend refactors
_CB_DO_OPTION test
_CB_SET_VOLUME tests
_cb_card test
_cb_u_card test
refactored _cb_event
_CB_SINGLE_EVENT tests