On the pin-externals branch, fix 'svn help copy' documentation.
On the pin-externals branch, fix 'svn help copy' documentation.

* subversion/svn/svn.c
  (svn_cl__options): We don't pin externals to their last-changed
   revision anymore. Just say "current" revision, for brevity.
   In fact, it's HEAD if the copy source is a URL, and it's the
   revision of the external WC if the copy source is a WC.


git-svn-id: 50c5f5df37af4354ae6e67714fc94b8d09273154@1655892 13f79535-47bb-0310-9956-ffa450edef68

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