[PATCH] Issue #3653: svn update should not output svn:external fetches if they have not been updated

[[[
Improves interaction, issue #3653: svn update should not output svn:external
* subversion/svn/notify.c (notify)
  Add <path_local> to Externals messages
  Note: po files should also be updated
]]]

Hi,

Here's a small patch for making svn:externals messages a bit more informative. With the "Fetching external item into '<path_local>'" -message removed, interpretation of svn_wc_notify_update_completed messages becomes a bit less obvious. You'll see stuff like:
External at revision 20
External at revision 2321
External at revision 1082367
At revision 19
The patch improves this to read:
External 'third-party' at revision 20
External 'snapshots' at revision 2321
External 'legacy' at revision 1082367
At revision 19
See attached notify.c.patch, Thanks,

tijn