Allows a space in a -selenium argument to JUnitShell.  (allows an 
  argument of the form -selenium "<host>:4444/*custom firefox3" )
Strip off quotes before passing a quoted argument from JUnitShell.synthesizeArgs()

Patch by: zundel
Review by: jgw, scottb 


git-svn-id: https://google-web-toolkit.googlecode.com/svn/trunk@3093 8db76d5a-ed1c-0410-87a9-c151d255dfc7