[ 12747] By: gsar                                  on 2001/10/28  18:33:23
          Log: finishing touches to system() fixes on windows:
               * detect cmd shell correctly even if it had full path in it
               * more quoting needed for single-arg system if the argument
               really had multiple quoted arguments within it
               * be smarter about not calling the shell when the executable
               has spaces, but otherwise does not need shell involvement
               * add a testsuite (windows-specific currently)