backport revisions 1162584, 1164861, 1162587 from trunk:

Add MaxRanges directive and limit # of accepted ranges to 200 by default.

Submitted By: Eric Covener, Guenter Knauf
Reviewed By: covener, fuankg, sf



git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.2.x@1164894 13f79535-47bb-0310-9956-ffa450edef68