additions to Http1Deserialiser#Deserialise
additions to Http1Deserialiser#Deserialise

1. Adds support for timeouts (closes #45)
2. Adds support for POST data (currently only processes POST data in the
   application/x-www-form-urlencoded format; the multipart/form-data
   handler has yet to be moved from HttpRequest).

McSherry/Zener