* gdb.base/run.c: Use FAKEARGV to build test executable that

  * gdb.base/run.c: Use FAKEARGV to build test executable that
      does not require a command line arg, since most simulators
      don't currently support passing such an arg into the simulated
      program.
      * gdb.base/commands.exp: Change tests to insert the proper
      value as the arg to the first recursive factorial call.  Change
      compilation line to define FAKEARGV at compile time.