[1.7] RFU: msmtp-1.4.18-1

[Jari Aalto]

Update to a newer upstream release:

wget \
    http://cante.net/~jaalto/tmp/cygwin/msmtp/msmtp-1.4.18-1-src.tar.bz2 \
    http://cante.net/~jaalto/tmp/cygwin/msmtp/msmtp-1.4.18-1.tar.bz2 \
    http://cante.net/~jaalto/tmp/cygwin/msmtp/msmtp-1.4.18.tar.bz2 \
    http://cante.net/~jaalto/tmp/cygwin/msmtp/setup.hint

Jari