Merge the r1575270 group from trunk:

 * r1575270, r1575284
   Fix inconsistent output in svn_client_proplist4 when using absolute paths.
   Notes:
     r1575284 is the test that exposes this bug.
   Justification:
     It's a regression in 1.8.8 compared to 1.8.5.
   Votes:
      +1: brane, rhuijben, philip


git-svn-id: https://svn.apache.org/repos/asf/subversion/branches/1.8.x@1579528 13f79535-47bb-0310-9956-ffa450edef68