On the fsx branch: Remove unnecessary functions from the svn_packed__* API.
No functional change.

* subversion/include/private/svn_packed_data.h
  (svn_packed__data_flush_buffer,
   svn_packed__data_fill_buffer): remove from the header

* subversion/libsvn_subr/packed_data.c
  (svn_packed__data_flush_buffer,
   svn_packed__data_fill_buffer): make static; add comment; move up
  (write_packed_uint_body,
   read_packed_uint_body,
   read_stream_uint,
   read_packed_uint): move up


git-svn-id: https://svn.apache.org/repos/asf/subversion/branches/fsx@1508529 13f79535-47bb-0310-9956-ffa450edef68