shlib.sh: add mailref function
commitef45716f4bc215baaf73eb0aad237cc33212e579
authorKyle J. McKay <mackyle@gmail.com>
Wed, 8 Nov 2017 22:14:55 +0000 (8 14:14 -0800)
committerKyle J. McKay <mackyle@gmail.com>
Wed, 8 Nov 2017 22:14:55 +0000 (8 14:14 -0800)
tree4aee54017e038b98ac5aaae4890a6996c839eadd
parentfea7ec0e22571f8835bd00a318f4f3bcae98fcab
shlib.sh: add mailref function

Provide alternative mailref function that works just like
the mail function except that it can set a "References"
header too.

Signed-off-by: Kyle J. McKay <mackyle@gmail.com>
shlib.sh