Avoid double cache lookup in FSFS in some cases.
Avoid double cache lookup in FSFS in some cases.

Discussion: http://svn.haxx.se/dev/archive-2015-05/0172.shtml

* subversion/libsvn_fs_fs/cached_data.c
  (svn_fs_fs__rep_contents_dir_entry): Use get_dir_contents() function
   to read directory entries on cache miss instead of
   svn_fs_fs__rep_contents_dir() because it performs cache lookup before
   reading data from disk.


git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@1681974 13f79535-47bb-0310-9956-ffa450edef68

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