* Style police and format nitpicking

  *) mod_cgi and mod_cgid: Don't use apr_status_t error return

     from input filters as HTTP return value from the handler.

     PR#31579.

     PR 31579.  [Nick Kew]

  *) mod_cache: Eliminate a bogus error in the log when a filter returns

     AP_FILTER_ERROR.  [Niklas Edmundsson <nikke acc.umu.se>]

  *) Fix issue which could cause piped loggers to be orphaned and never

     terminate after a graceful restart.  PR 40651.  [Joe Orton,

     Ruediger Pluem]

  *) core: Fix issue which could cause piped loggers to be orphaned and never

     terminate after a graceful restart.  PR 40651.  [Joe Orton, Ruediger Pluem]

  *) Fix address-in-use startup failure caused by corruption of the list of

     listen sockets in some configurations with multiple generic Listen

  *) core: Fix address-in-use startup failure caused by corruption of the list

     of listen sockets in some configurations with multiple generic Listen

     directives.  [Jeff Trawick]

  *) mod_headers: support regexp-based editing of HTTP headers [Nick Kew]

  *) mod_headers: Support regexp-based editing of HTTP headers.  [Nick Kew]

   * mod_proxy: Add explicit flushing feature.

     When Servlet container sends AJP body message with size 0,

     this means that Servlet container has asked for an explicit flush.

     Create flush bucket in that case. This feature has been added

     to the recent Tomcat versions without breaking the AJP protocol.

   * mod_proxy: Add explicit flushing feature. When Servlet container sends AJP

     body message with size 0, this means that Servlet container has asked for

     an explicit flush. Create flush bucket in that case. This feature has been

     added to the recent Tomcat versions without breaking the AJP protocol.

     [Mladen Turk]

  *) mod_proxy_balancer: Set the new environment variable BALANCER_ROUTE_CHANGED

  *) mod_disk_cache: Make sure that only positive integers are accepted

     for the CacheMaxFileSize and CacheMinFileSize parameters in the

     config file. PR39380 [Niklas Edmundsson <nikke acc.umu.se>]

     config file. PR39380.  [Niklas Edmundsson <nikke acc.umu.se>]

  *) mod_cache: From RFC3986 (section 6.2.3.) if a URI contains an

     authority component and an empty path, the empty path is to be equivalent

  *) core: Deal with the widespread use of apr_status_t return values

     as HTTP status codes, as documented in PR#31759 (a bug shared by

     the default handler, mod_cgi, mod_cgid, mod_proxy, and probably

     others). [Jeff Trawick, Ruediger Pluem, Joe Orton]

     others). PR31759.  [Jeff Trawick, Ruediger Pluem, Joe Orton]

  *) mod_ext_filter: Handle filter names which include capital letters.

     PR 40323.  [Jeff Trawick]

  *) mod_isapi: Handle "HTTP/1.1 200 OK" style status lines correctly, the

     token parser worked while the resulting length was misinterpreted.

     PR 29098 [Brock Bland <bbland serena.com>]

     PR 29098.  [Brock Bland <bbland serena.com>]

  *) mod_isapi: Return 0 (failure) for more of the various ap_pass_brigade

     attempts to stream the response at the client.  PR 30022 [William Rowe]

     attempts to stream the response at the client.  PR 30022.  [William Rowe]

  *) mod_isapi: Ensure we walk through all the methods the developer may have

     employed to report their HTTP status result code.

     PR 16637 30033 28089  [Matt Lewandowsky <matt iamcode.net>, William Rowe]

     PR 16637 30033 28089.  [Matt Lewandowsky <matt iamcode.net>, William Rowe]

  *) mod_echo: Fix precedence problem in if statement. PR 40658.

     [Larry Cipriani <lvc lucent.com>]

  *) The full server version information is now included in the error log at

     startup as well as server status reports, irrespective of the setting

     of the ServerTokens directive.  ap_get_server_version() is now 

     deprecated, and is replaced by ap_get_server_banner() and 

     ap_get_server_description().  [Jeff Trawick]

     of the ServerTokens directive.  ap_get_server_version() is now deprecated,

     and is replaced by ap_get_server_banner() and ap_get_server_description().

     [Jeff Trawick]

  *) mod_proxy_balancer: Workers can now be defined as part of

     a balancer cluster "set" in which members of a lower-numbered set