Dealy bug (?) in CM0 microlib

Building with Microlib:

    s_tx_buffer                              0x100015d0   Data        2050  bluetooth_frame_handler.o(.bss)
    STACK                                    0x10001dd8   Section      304  startup_lpc11xx.o(STACK)

"s_tx_buffer" goes until 0x10001DD2 - but the stack grows backwards...?
This causes data corruptions - of course!

withuot Microlib:

    s_tx_buffer                              0x100015cc   Data        2050  bluetooth_frame_handler.o(.bss)
    .bss                                     0x10001dd0   Section       96  libspace.o(.bss)
    HEAP                                     0x10001e30   Section        0  startup_lpc11xx.o(HEAP)
    STACK                                    0x10001e30   Section      304  startup_lpc11xx.o(STACK)
    Heap_Mem                                 0x10001e30   Data           0  startup_lpc11xx.o(HEAP)
    Stack_Mem                                0x10001e30   Data         304  startup_lpc11xx.o(STACK)

Which looks better and indeed causes no corruptions.