svnmucc should accept -? like all our other commands.
svnmucc should accept -? like all our other commands.

* subversion/svnmucc/svnmucc.c:
  (usage): no need to copy usage onto the stack. keep it as a normal
    string constant. add -? into the list of options.
  (main): no need to copy OPTIONS onto the stack; make it static.
    add -?into the set of options and the big switch.

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