01 Mar 2009: 0.9.0 Miek <miek@miek.nl>
  - major (lowlevel) feature enhancements -
  - again: internal file list change -
  * internal filelist: add uid/gid here. Why? See
    http://www.miek.nl/blog/archives/2009/02/21/backing_up_remotely_as_a_normal_user/index.html
  * rdup*: make the -c output block based:
    Every BUFSIZE bytes a block is started.
    The last block is signaled with a size
    of 0. This eliminates the race condition,
    removes an extra stat() for every file
    and makes rdup-tr not use any temporary
    files. (Idea from: John Goerzen)
  * rdup: -c output changes for files: use blocks
  * rdup: -l switch is not needed anymore, so removed
  * rdup: add -M same as -N but check the mtime of the
    timestamp file
  * rdup-up: expects the new -c format as input
  * rdup-up: better handle non-writable directories;
    make them temp. writable (if possible)
  * rdup-tr: add path encryption/decryption. Not only
    can you encrypt the files' contents but also
    the actual file names. See options -X and -Y.
  * rdup*: shaved off 1 byte from the r_entry struct
  * rdup*: nicer unknown argument handling