Prevent no-op property changes during svn copy --pin-externals.
Prevent no-op property changes during svn copy --pin-externals.

Externals properties were reported as changed in 'svn log -v' even if their
content didn't change during pinning.

* subversion/libsvn_client/copy.c
  (resolve_pinned_externals): Return only pinned externals, rather than
   returning a full list of new externals including non-pinned ones.

Found by: Marc Strapetz <marc.strapetz@syntevo.com>


git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@1676538 13f79535-47bb-0310-9956-ffa450edef68

YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion