#1 patch for cvswebedit.cgi to set filename

[David Ethell]

This patch outputs the Content-disposition header so
that the download_dir function can tell the browser
the filename so users don't have to type a
correct .tgz extension on their file.

not sure if this is the proper way to send patches.
Sorry if it's not.

[David Ethell]

patch for cvswebedit.cgi