svn commit: propchange - r13128 - svn:log

Author: nori
Revision: 13128
Property Name: svn:log

New Property Value:
Make the default error message for svnversion shorter and add an option
'--help', which display a longer help message that was the default error
message.

* subversion/svnversion/main.c
  (usage): Replace the error message with shorter one suggesting an option
    '--help'. Also remove an argument 'options', which is no longer used
    in the function.
  (help): A new function to display the help message, which was the error
    message displayed by the function 'usage', to stdout.
  (main): Add lines for a new option '--help'. Also remove 'options' from
    arguments of 'usage'.

Approved by: julianfoad