Fixed hardfault in __libc_init_array.
Updated linker script to match ST's example code
Bootloader: fixed hang in uart_flush
Bootloader: Show git version
Early initialization for the xbee uart. We can now see assertions during
FreeRTOS startup.
Fixed assertion in get_us_time64
Fixed assertion in VCP_DataTx
Fixed command table when using -flto
malloc_lock without disabling interrupts