[RFE] Add the "NoDecode" option to the AllowEncodeSlashes directive in httpd

Issue

[RFE] Add "NoDecode" option to AllowEncodeSlashes directive.

The AllowEncodedSlashes directive currently supports "yes|no" in the latest available version for RHEL6: httpd-2.2.15-29.el6. In the upstream version httpd-2.2.18, a third option "NoDecode" was added to that directive. Upstream apache documentation

Add that third option added as a supported option to the AllowEncodedSlashes directive to address security concerns over not using NoDecode

As noted in the upstream documentation,

"Note: If encoded slashes are needed in path info, use of NoDecode is strongly recommended as a security measure.Allowing slashes to be decoded could potentially allow unsafe path"

This would affect the httpd package as well as the associated httpd-manual documentation package.