make rs485 modules compile again
remove compiler warning about unused 'is_e6'
make ds2450 code compile without warnings
fixed the warning the right way
the sendmail modul did sent the password when the username was requested
Merge pull request #187 from sauttefk/e6-upstream2

autotest for rs485 modules; fix errors and warnings
Merge remote-tracking branch 'upstream/master' into e6-beteigeuze

Conflicts:
	pinning/hardware/beteigeuze.m4