Update some flaky GMs to see if they stick.

expectations/gm/Test-Mac10.7-MacMini4.1-GeForce320M-x86_64-Release/expected-results.json

 {
   "actual-results": {
     "failed": null, 
     "failure-ignored": null, 
     "no-comparison": null, 
     "succeeded": null
   }, 
   "expected-results": {
     "3x3bitmaprect_565.png": {
       "allowed-digests": [
@@ skipping 5729 matching lines @@
       ], 
       "bugs": [
         1578
       ], 
       "reviewed-by-human": false
     }, 
     "dftext_gpu.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
-          6955738074070758128
+          12337015975742306892
         ]
       ], 
       "reviewed-by-human": true
     }, 
     "discard_gpu.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
           11635187478196931850
         ]
@@ skipping 6422 matching lines @@
           "bitmap-64bitMD5", 
           1120308788076075072
         ]
       ], 
       "ignore-failure": false
     }, 
     "pathfill_gpu.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
-          16356487144582413143
+          12984965032962417681
         ]
       ], 
       "ignore-failure": false, 
       "reviewed-by-human": true
     }, 
     "pathfill_mesa.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
           2226546390643128311
@@ skipping 4359 matching lines @@
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
           11835374726311942978
         ]
       ], 
       "reviewed-by-human": true
     }
   }
 }