Improve pool usage in svn_fs_fs__set_entry().  (Compare r1304903 and the revisions it mentions.)
Improve pool usage in svn_fs_fs__set_entry().  (Compare r1304903
and the revisions it mentions.)

* subversion/libsvn_fs_fs/fs_fs.c
  (svn_fs_fs__set_entry):
    Create a subpool just once, and use it in a few more places.


git-svn-id: 0c44fd2d74525dee5ee0cd17497746de131a108c@1304907 13f79535-47bb-0310-9956-ffa450edef68

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