Fixed FileProgrammer import issue for user scripts.
Fixed FileProgrammer import issue for user scripts.

mesheven/pyOCD,flit/pyOCD,mbedmicro/pyOCD,pyocd/pyOCD,mesheven/pyOCD,mbedmicro/pyOCD,flit/pyOCD,mbedmicro/pyOCD,mesheven/pyOCD,pyocd/pyOCD