Fix md5sums generation for deb packages

The md5sums control file must be formatted exactly as it would be
produced by a run of md5sum (MD5, two spaces, file path). Failing to do
so breaks dpkg --verify.
Merge pull request #799 from rfc1459/md5sums

Fix md5sums generation for deb packages
Version bump and update changelog
Fix copy/paste problem
When converting deb to deb, respect any changelog file found
Update changelog and bump version
Verify if RPM triggerindex is valid
Merge pull request #802 from xelwarto/master

Verify if RPM triggerindex is valid
fix missing option name

The message doesn't make sense without the option name.
Merge pull request #813 from mriehl/patch-1

fix missing option name