On the fsx-1.10 branch: Reduce peak memory consumption in recursive DAG walk by not allocating all temporaries of all iterations from the same scratch pool.
On the fsx-1.10 branch: Reduce peak memory consumption in recursive
DAG walk by not allocating all temporaries of all iterations from
the same scratch pool.

* subversion/libsvn_fs_x/tree.c
  (make_path_mutable): Use a short-lived pool for temporaries.

git-svn-id: 40002ad72c45bcd78a61b73a7ab5afec77c4e304@1658376 13f79535-47bb-0310-9956-ffa450edef68

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