Version
-------
1.1     Released March 6, 2003
        Adds a shred option (-s) to secure delete files instead of just the
        standard remove command. The shred will overwrite the file 25 times
        then add a final overwrite with zeros to hide the shredding.
        Finally it removes the file after shredding. The remove (-r) option
        is still available.

1.2     Released August 9, 2008
        Note: most changes courtesy of John Pell.
        All messages generated by the script now go to stderr.
        Files are NOT deleted if the encryption/decryption fails.
        Password is read from stdin.
        Changed error message for "both -e and -d".
        In manual encryption mode, encrypt EVEN IF ALREADY SO 
          (since the user did specify FORCE on the command line).
        Added quotes around $# for usage statement
          (only because it screwed up my happy syntax highlighting).
        Changed all instances of "[ ! -s" to "[ ! -r",
          if the user wants to encrypt an empty file, that's their perogative.
        Removed all TAB characters (replaced with 4 spaces).
        Removed -n option for Password echo statements.
        Updated packaging.