On the issue-3067-deleted-subtrees branch: Close out some remaining TODOs.
On the issue-3067-deleted-subtrees branch: Close out some remaining TODOs.

* subversion/libsvn_client/merge.c
  (adjust_deleted_subtree_ranges): Use a subpool.  Check 
  that svn_ra_get_deleted_rev() found a valid revision.

git-svn-id: e7ac546841da645b091182be304af3e25765b67d@873927 13f79535-47bb-0310-9956-ffa450edef68

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