rebaselines for imageblur, imagemagnifier, and still some for gradient_radial2

expectations/gm/Test-Ubuntu12-ShuttleA-ATI5770-x86_64-Release/expected-results.json

 {
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     "no-comparison": null, 
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   "expected-results": {
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       "allowed-digests": [
@@ skipping 8529 matching lines @@
       ], 
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     }, 
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+          2509551852078940571
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@@ skipping 2343 matching lines @@
           4745935902621983993
         ]
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     }
   }
 }