GND CONFLICT BETWEEN TAXIING B747 AND B737-700 PUSHED FROM GATE.

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AFTER PUSHBACK AND DEICE FROM THE GATE WE NOTICED A B747 CARGO PLANE STARTING TO TAXI IN OUR DIRECTION. REALIZING THERE WAS PROBABLY NOT ENOUGH ROOM FOR THE B747 TO TAXI BTWN US AND THE OTHER CARGO ACFT TO OUR R; WE CALLED GND TO ALERT THEM. I DO NOT RECALL IF GND CTL CALLED THEM TO STOP RIGHT AWAY OR NOT. AFTER WATCHING THE ACFT CONTINUE AND IT WAS APPARENT THEY WERE NOT GOING TO STOP. WE CALLED OVER THE RADIO FOR THE B747 TO STOP. THEY STOPPED ABOUT A FOOT FROM WHAT I THOUGHT WAS GOING TO BE WING TO WING CONTACT. WE TOLD GND TO GET SOMEONE OUT TO MAKE SURE NO CONTACT WAS GOING TO OCCUR. AFTER WAITING FOR SOMEONE TO COME OUT; THE B747 MARSHALLER INSTRUCTED IT TO TAXI FORWARD. WHICH THEY DID WITHOUT PERMISSION FROM GND. THE WINGTIPS PASSED WITHIN 6 INCHES AND NO DAMAGE OCCURRED. THE CAPT CALLED FOR THE DEICE TRUCK TO COME AND CHK THE WING TO MAKE SURE THERE WAS NO DAMAGE. EVEN THOUGH IT IS A FREE MOVEMENT AREA; GND CTL SHOULD NOT HAVE GIVEN THE B747 TAXI INSTRUCTIONS THAT WOULD TAKE THEM SO CLOSE TO ANOTHER ACFT.