Merge r704726, r704845 from trunk:

Export and install the mod_rewrite.h header to ensure the optional
rewrite_mapfunc_t and ap_register_rewrite_mapfunc functions are
available to third party modules.

Minor bump when exporting mod_rewrite.h

Reviewed by: minfrin, niq, rpluem


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.2.x@720590 13f79535-47bb-0310-9956-ffa450edef68