Fix MODCLUSTER-224 by sending a start message for a start event on a context.
[BZ 1008901] Some serious log messages don't have id to identify them.
Add support for 2.4.x
Merge branch 'master' of https://github.com/jfclere/mod_cluster
Merge pull request #56 from jfclere/master

[BZ 1008901] Some serious log messages don't have id to identify them.
Revert "MODCLUSTER-338 Advertize adds a message digest even if security key is not configured"

This reverts commit 2e3f92b67b0d708fbf2895eaffb75e8d555477f1.
[MODCLUSTER-337] Revisit: if security key is not used, verify using zero byte array
[MODCLUSTER-338] Fix tests to send properly formed advertise message packet
use the correct extension.
[MODCLUSTER-381] Stability and portability issues in native code (contributed by Jan Andres)
Ajust the sbin to bin move of apxs.
Merge pull request #59 from rhusar/MODCLUSTER-381

[MODCLUSTER-381] Stability and portability issues in native code (contri...
In fact export doesn't propagate...
add support for httpd-2.4.x
use libexecdir value for mod_rewrite too.
Prevent our module to collide with the httpd-2.4.x one.
Adjust the name according other modules in httpd-2.4.x
move the directory too.
Ajust the new mod_authz_host directives.
Update the README file to describe the project, use github-friendly markdown format, update broken links, etc.