uavobjectmanager: use pios_recursive_mutex
flight/uavtalk: use pios_recursive_mutex
taskmonitor: use pios_mutex, was recursive mutex before
pios/common: added support for ChibiOS
pios/stm32f4xx: added support for ChibiOS
pios/stm32f4xx: added makefile and linker script for ChibiOS support
libraries/wmminternal: prevent redefining TRUE and FALSE
pios/common: added pios_freertos_transition
pios/stm32f4xx: added pios_freertos_transition_priv.h