avrcp: use AVCTP PSM for L2CAP, move AVCTP_Browsing outside from Bluetooth Profile Descriptor List

avrcp: fix unused var

avrcp: put avrcp context into sdp query context

avrcp: add SDP query

fix warnings - mostly enum casts and set but not used

avrcp: remove printf

avrcp: enable all events to register, for pts purposes add single shot rewind and fast forward

avdtp: fix wrongly freed stream endpoint

remove <unistd.h> from examples and avrcp impl

avrcp: fix compile

avrcp: drop con_handle from connection struct, use avrcp_cid in events, free memory on disconnect

avrcp: remove track_status from AVRCP_NOTIFICATION_EVENT_TRACK_CHANGED

avrcp: emit connestion established with error code on failure

avrcp: use 'command_type' for ctype in AVRCP Events

avrcp: provide status return for all functions

avrcp: clean disconnect, improve notification registration

avrcp: use l2cap cid instead of handle

avrcp: create connection returns status

avrcp: fix state transition when notification comes before response

avrcp: fix array too small in cmd send

avrcp: only parse get element attributes for AVRCP_CTYPE_RESPONSE_IMPLEMENTED_STABLE or AVRCP_CTYPE_RESPONSE_CHANGED_STABLE

avrcp: clear todo flag before sending command

fix 'comparions is always true' warning

bluetooth_sdp: use scraped SDP UUID and PSMs for SDP record creation and parsing

tool: add update_filename.py that adds __BTSTACK_FILE__ to every .c file for use with debug output instead of __FILE__