core: AllowEncodedSlashes new option NoDecode to allow encoded slashes

in request URL path info but not decode them. Change behavior of option
"On" to decode the encoded slashes as 2.0 and 2.2 do.  PR 35256,
PR 46830.



git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1082196 13f79535-47bb-0310-9956-ffa450edef68