2.50 [KK 2009-03-30]
- Bugfix in activation of the onfail script in the checkup thread.
- Compilation flag -Werror only passed to the compiler when on the
  development system Thera.local (see xr/etc/Makefile.class).
- Onstart, onend and onfail scripts (when present) are invoked with a
  third argument, the number of connections at the time
- Set-Cookie header directive (see the HTTP dispatcher) attaches an
  explicit path "/".
- Rewired the tcp dispatcher and http dispatcher to use a common
  buffer inside the tcp dispatcher (instead of 2 separate ones).