Bug#689816: devscripts: [bts] crashes if libauthen-sasl-perl isn't installed, but needed

[Benjamin Drung]

Package: devscripts
Version: 2.12.4
Severity: minor
User: devscripts at packages.debian.org

Dear Maintainer,

bts crashes if libauthen-sasl-perl isn't installed, but needed. Instead of
showing an obscure error message, it should tell the user to install
the libauthen-sasl-perl package.

$ bts usertags 688060 new
bts: failed to authenticate to smtps://smtp.gmail.com
(Can't locate Authen/SASL.pm in @INC (@INC contains: /usr/share/devscripts /etc/perl /usr/local/lib/perl/5.14.2 /usr/local/share/perl/5.14.2 /usr/lib/perl5 /usr/share/perl5 /usr/lib/perl/5.14 /usr/share/perl/5.14 /usr/local/lib/site_perl .) at /usr/share/perl/5.14/Net/SMTP.pm line 117, <STDIN> line 1.
)

--- ~/.devscripts ---
BTS_SMTP_HOST=smtps://smtp.gmail.com