[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.