svnsync usage message improvements.
svnsync usage message improvements.

Suggested by: dlr

* subversion/svnsync/main.c
  (svnsync_cmd_table):  Introduce the term "read-only mirror" to the
    'svnsync init' usage text, and add blank lines after the "usage:"
    lines in all subcommand help.

jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion