[OS] Added a basic queue interface, and implemented in the FreeRTOS kernel layer
[NET] added sys_arch layer to fully support lwIP
[OS] Added recursive mutexes
[OS] NET - wrapper for LWIP stack
[HAL] LM3Sxx - added MAC driver
[MACH] LPCxx - modified driver probe function to use BT_DestroyHandle insted of bt_kfree
[RESOURCE] Added a BT_RESOURCE_INTEGER for passing generic integer values.