Merge the r1475772 group from trunk:

 * r1475772, r1476092, r1478897
   Fix a bug in authz file processing where group and user names were
   not treated case-sensitively, which could lead to unpredictable
   results depending on the ordering of the authz config entries.
   See http://subversion.tigris.org/issues/show_bug.cgi?id=4361
   Justification:
     See above about unpredictable results. A related fix for
     repository paths handling was made in 1.7.0.
   Notes:
     r1476092 and r1478897 (obvious fix) are the CHANGES updates.
   Votes:
     +1: brane
     +1: philip, cmpilato (for 1.8.0 only, not later 1.8.x)



git-svn-id: https://svn.apache.org/repos/asf/subversion/branches/1.8.x@1478983 13f79535-47bb-0310-9956-ffa450edef68