pipe.  Use the command line switch -compressed with xref_parser.pl to do
this.  The default behaviour (without the -compressed switch) is still
to uncompress gzipped files.

defined, otherwise skip that Xref.

exist.  Otherwise, if a previous file exists (with checkdownload==1),
skipdownload would be 1 and the missing files would not be downloaded...

Fixes spurious FAILs because of missing data.

one-line banner.

Also fixed a old-style test of existance of list elements.

have DR lines).

"perl -MCarp=verbose ...").

Regex fixes ("/\.gz/" --> "/\.gz$/") to be on the safe side.

One instance of forgetting to append directory to file name fixed.

strings.

Small regex tweaks.

Added note about eb-eye email address.

Warn about db_names with - in as this (currently) breaks Mart. Can be removed when MartBuilder is live.