The "olimex" transport has been divided into "cp210x" and "cdc_acm",
each of which take a specific vendor/product combination in their
constructor. Support for the MSP430-JTAG-ISO-MK2 has been moved into its
own driver instance.
The transport/ subdirectory now contains implementations of the
transport_t interface, which has been expanded to include flush and
set_modem operations.