Add oversampling for large baudrate, to minimize error

	modified:   flight/pios/stm32f4xx/pios_usart.c
Set default speed 115200 for telemetry information.

	modified:   shared/uavobjectdefinition/hwsettings.xml
Remove CameraStab module from build because this module makes dedlock.

	modified:   flight/modules/CameraStab/camerastab.c
	modified:   flight/targets/boards/brainyfly/firmware/Makefile
Add XBEE module working on 115200 on USART1

	Add USART1 for XBEE
	modified:   flight/targets/boards/brainyfly/board_hw_defs.c

	Add macros INCUDE_XBEE
	modified:   flight/targets/boards/brainyfly/firmware/inc/pios_config.h

	Use XBEE for main telemetry port
	modified:   flight/targets/boards/brainyfly/firmware/pios_board.c