Bug#484359: [frontend/lintian] Urgencies are case-sensitive

["Adam D. Barratt" <adam@adam-barratt.org.uk>]

Package: lintian
Version: 1.23.49

Hi,

During a discussion on #debian-release, it was confirmed that britney
treats urgencies as case-sensitive - i.e. high != HIGH. lintian's check
for valid urgencies, conversely, is case-insensitive.

The check should be modified to be case-sensitive. As "HIGH" is not a
valid urgency as far as britney is concerned, a package uploaded with
such an urgency will be treated as having the default urgency value,
which is currently "low".

Regards,

Adam