Make a mention of '--version' in help command output. Sanitize 'invalid' options passed after '--version' command.
Make a mention of '--version' in help command output.
Sanitize 'invalid' options passed after '--version' command.

* subversion/svnrdump/svnrdump.c
  (struct opt_baton_t): New member 'version'.
  (help_cmd): Now "svnrdump help" would display a better header.
  (main)    : Sanitize invalid options passed to "svnrdump --version".

Patch by: Prabhu Gnana Sundar <prabhugs@collab.net>
Suggested by: kameshj
Tweaked by: kameshj

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