K 10
svn:author
V 4
tale
K 8
svn:date
V 27
1998-10-14T17:26:19.000000Z
K 7
svn:log
V 315
added simple comments about why particular headers are signed

made error messages a tad more helpful for situations when it is hard
to know what message was trying to be signed (such as via an "at" job)

ensure headers from @ignoreheaders are not in output, even if present
in @orderheaders.

some minor cleanups.

END
