On the 'move-tracking-2' branch: Several updates to 'svnmover'.

Improve the diff commands, making 'diff' show paths and 'diff-e' show an
element-focused output. Improve parsing of command-line targets so that peg
revisions work consistently with most commands where relevant. Eliminate
no-op changes from the Ev1 drive.

* subversion/libsvn_delta/compat3.c
  Several updates.

* subversion/svnmover/svnmover.c
  Several updates.


git-svn-id: https://svn.apache.org/repos/asf/subversion/branches/move-tracking-2@1635540 13f79535-47bb-0310-9956-ffa450edef68