Merge Android Pie into master

system/bta/pan/bta_pan_act.cc

system/btif/src/btif_rc.cc

system/osi/src/config.cc

system/profile/avrcp/tests/avrcp_connection_handler_test.cc

system/stack/avct/avct_bcb_act.cc

system/stack/avdt/avdt_msg.cc

system/stack/avrc/avrc_api.cc

system/stack/avrc/avrc_pars_ct.cc

system/stack/avrc/avrc_pars_tg.cc

system/stack/bnep/bnep_api.cc

system/stack/bnep/bnep_main.cc

system/stack/bnep/bnep_utils.cc

system/stack/btm/btm_int.h

system/stack/btm/btm_main.cc

system/stack/btu/btu_init.cc

system/stack/gatt/gatt_cl.cc

system/stack/gatt/gatt_sr.cc

system/stack/l2cap/l2c_ble.cc

system/stack/l2cap/l2c_fcr.cc

system/stack/l2cap/l2c_main.cc