Decrypt files with embedded filenames

[Kruse, Jason K.]

I was running into the use-embedded-filename option not working also on
Solaris using 1.0.6 and here's what I came up with:

The decrypt_message() call in decrypt.c causes opt.outfile to be set to '-'
since we assume --outfile isn't needed.  In plaintext.c the check for
opt.outfile is before the !opt.use_embedded_filename in handle_plaintext()
and use_embedded_filename is never used.

Fix:

Change decrypt.c line 70 from 

if ( !opt.outfile )

to

if ( !opt.outfile && !opt.use_embedded_filename )

Hope this helps.

Jason