* Version 1.5 :
    Unbreak compilation troubles with GlibC 2.3.2+.

* Version 1.4 :
    Always use the -all option of sweep.
    Autoconf and automake were updated.

* Version 1.3 :
    Made the Received: header more RFC conformant.

* Version 1.2 :
    Check for nanosleep, and use it in place of usleep whenever
possible. See the new wait_seconds() function.
    Default concurrency limit bumped to 10.

* Version 1.1 :
    Implement concurrency limit : new --with-concurrency autoconf switch.
    Dmalloc support.

* Version 1.0 :
    Initial release.