Merge r1757838 from trunk:

add [flags] to syntax 

per http://httpd.apache.org/docs/2.4/mod/mod_rewrite.html#comment_5728

split list of flags out of the massive CondPattern list.




git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1757839 13f79535-47bb-0310-9956-ffa450edef68