Heirloom Mailx hasn't been maintained for some time: the last release
on their web site was 11.25 in 2005 and Debian shipped 12.5 in 2016, but
this appears to be a Debian-specific fork which is also now dead.
s-nail is an alternative mail(1) fork which is actively maintained, so
add a recipe for that. It provides an alternative for ${bindir}/mailx,
so should be a drop-in replacement.
Signed-off-by: Ross Burton <ross.burton@arm.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>
