Take care of a bunch of pending GPU rebaselines and remove tests from ignored-tests.txt

expectations/gm/Test-Mac10.7-MacMini4.1-GeForce320M-x86-Debug/expected-results.json

 {
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   "expected-results": {
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@@ skipping 6586 matching lines @@
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@@ skipping 216 matching lines @@
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         ]
@@ skipping 216 matching lines @@
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     "downsamplebitmap_text_high_72.00pt_pdf-mac.png": {
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@@ skipping 845 matching lines @@
           "bitmap-64bitMD5", 
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     "filterbitmap_checkerboard_192_192_gpu.png": {
       "allowed-digests": [
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       "reviewed-by-human": true
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     "filterbitmap_checkerboard_192_192_pdf-mac.png": {
       "allowed-digests": [
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@@ skipping 8707 matching lines @@
           "bitmap-64bitMD5", 
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     "vertices_80_gpu.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
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+          1238935355949663480
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+      "reviewed-by-human": true
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     "vertices_80_pdf-mac.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
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       "reviewed-by-human": false
     }, 
@@ skipping 403 matching lines @@
           7829854837061118142
         ]
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       "bugs": [
         1578
       ], 
       "reviewed-by-human": false
     }
   }
 }