Create r1507044 backport branch.

git-svn-id: https://svn.apache.org/repos/asf/subversion/branches/1.7.x-r1507044@1507300 13f79535-47bb-0310-9956-ffa450edef68
On the 1.7.x-r1507044 branch, backport r1507044 from trunk, with the
following changes:

* subversion/bindings/swig/perl/libsvn_swig_perl/swigutil_pl.c:
  Use ye olde apr_hash_set instead of svn_hash_sets.
  Resolve whitepace conflicts.


git-svn-id: https://svn.apache.org/repos/asf/subversion/branches/1.7.x-r1507044@1507301 13f79535-47bb-0310-9956-ffa450edef68
Merge the 1.7.x-r1507044 branch:

 * r1507044
   Fix a bug in the Perl bindings.
   Branch: ^/subversion/branches/1.7.x-r1507044
   Justification: The bug makes scripts using SVN::Client look like
     as if they didn't honor config settings from ~/.subversion/servers,
     though they should by default.
   Votes:
     +1: rschupp, danielsh


git-svn-id: https://svn.apache.org/repos/asf/subversion/branches/1.7.x@1511569 13f79535-47bb-0310-9956-ffa450edef68