Teach backport.pl to parse non-approved entries, too.

* tools/dist/backport.pl
  (handle_entry): In $YES mode, skip non-approved entries.
  (main): Parse both approved and non-approved entries, noting which is which.

git-svn-id: https://svn.apache.org/repos/asf/subversion/trunk@1471504 13f79535-47bb-0310-9956-ffa450edef68