- up to r2504

- up to r2504
  * Fix bug with FastCGI request id overflow under high load; just use always id 1 as we don't use multiplexing. (thx jgray)
  * Add some dirlisting enhancements (fixes #1458)
  * Add option to enable TCP_DEFER_ACCEPT (fixes #1447)
  * Limit amount of bytes read for one read-event (fixes #1070)
  * Add evasive.silent option (fixes #1438)
  * Make mod_extforward headers configurable (fixes #1545)
  * Add '%_' pattern for complete hostname in mod_evhost (fixes #1737)
  * Add IPv6 support to mod_proxy (fixes #1537)
  * mod_ssi printenv: print cgi env, add environment vars to cgi env (fixes #1713)
  * Fix error message if no auth backend was set
  * Fix SERVER_NAME port stripping (fixes #1968)
  * Fix x-sendfile 2gb limiting (fixes #1970)
  * Fix mod_cgi environment keys mangling (fixes #1969)
  * Fix workaround for incorrect path info/scriptname if scgi prefix is "/" (fixes #729)
  * Fix max-age value in mod_expire for 'modification' (fixes #1978)

Changed files:
    lighttpd-branch.diff -> 1.51