Changes to "MirrorGET" between r1 and r3

Changes to MirrorGET between r1 and r3

'''BitTorrent For Your HTTP Mirrors'''

Fetch segments of large files from different remote mirrors to increase download speed.

Implementations:
   * C implementation -->    * [C] implementation
   ** Protothreads based [http://www.rkeene.org/projects/info/resources/projects/mirrorget/mirrorget.c] -->    ** [Protothreads] based [http://www.rkeene.org/projects/info/resources/projects/mirrorget/mirrorget.c]
   ** Pthreads based version (not yet available) -->    ** [Pthreads] based version (not yet available)
   * Bash implementation (not yet available)

Legend

     Only in r1
     Only in r3
     -->      Modified slightly between r1 and r3