Changes in current version:
 o allow \r or \n individually to separate HTTP headers instead of the standard "\r\n"; from Charles Kerr.
 o demote most http warnings to debug messages
 o Fix Solaris compilation; from Magne Mahre
 o Add a "Date" header to HTTP responses, as required by HTTP 1.1.
 o Support specifying the local address of an evhttp_connection using set_local_address
 o Fix a memory leak in which failed HTTP connections whould not free the request object
 o Make adding of array members in event_rpcgen more efficient, but doubling memory allocation
 o Fix a memory leak in the DNS server
 o Fix compilation when DNS_USE_OPENSSL_FOR_ID is enabled
 o Fix buffer size and string generation in evdns_resolve_reverse_ipv6().
 o Respond to nonstandard DNS queries with "NOTIMPL" rather than by ignoring them.
 o In DNS responses, the CD flag should be preserved, not the TC flag.
 o Fix http.c to compile properly with USE_DEBUG; from Christopher Layne