- Cleanup with spec-cleaner

- Version bump to 1.2.40:
* Fix forwarding of chunked requests, which is broken in version 1.2.39. (rjung)
* 56352: Fix regression in memory release. (mturk)
* Fix status worker display of worker IP address after name or port was changed. (rjung)
* 56297: Improve key hash function. Copied from APR. (rjung)
* 55683: Remove quotes from quoted session cookies. (rjung)
* 53542: ISAPI: Fix grammar in 503 error page. (rjung)
* 55696: Crash on Mac OS X 10.9 during config parsing. (rjung)
* Deprecate nt_service from Tomcat Connectors. (mturk)
* 56133: Fix possible crash when a request fails during request body transfer to the back end and reply_timeout was set. Patch contributed by Hiroto Shimizu. (rjung)
* Fix status worker not updating parameters for all members. (mturk)
* 55853: HTTPD: Use the correct API for setting Content-Length. Patch contributed by areese yahoo-inc.com. (rjung)
* Add IPV6 support for connection to webserver. New directive prefer_ipv6 has been added to control the hostname resolution and preserve backward compatibility. (mturk)
* Add --disable-sock-cloexec to configure to disable use of SOCK_CLOEXEC (using FD_CLOEXEC + fnctl instead) so built modules will work with Linux kernels prior to 2.6.27. (timw)
* Clean up config file parsing. Worker names are now restricted to 60 bytes. (rjung)
* Allow to set a stickyness cookie in case a web framework breaks Tomcat's adding of the routing ID to the end of the JSESSIONID cookie. (rjung)
* Use max_packet_size also for request body forwarding. (rjung)
* Apache 2.4: By default forward logical client address as provided by mod_remoteip. When setting JkOptions ForwardPhysicalAddress mod_jk will instead forward the physical peer address. (rjung)
* Minor documentation improvements. (rjung)