MSP430 support in vsprog

Information:
    Vsprog can support MSP430(without TEST pin) in JTAG interface.
    Auto-detect feature is supported on MSP430.
    Supported target area: flash('f').

Vsprog options:
    -smsp430, refer to -s option.
    -c, refer to -c option.
    -m, refer to -m option. Supported modes:
        j: JTAG mode, default