update pdf-mac gms, after adding duport for perspective shaders in pdf

expectations/gm/Test-Mac10.6-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 7485 matching lines @@
           "bitmap-64bitMD5", 
           1787180472012940822
         ]
       ], 
       "ignore-failure": false
     }, 
     "gradients_local_perspective_pdf-mac.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
-          16788270734039469282
+          7794526201102406487
         ]
       ], 
       "ignore-failure": false
     }, 
     "gradients_mesa.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
           12993442652867407045
         ]
@@ skipping 3095 matching lines @@
           "bitmap-64bitMD5", 
           13812553862406878773
         ]
       ], 
       "ignore-failure": false
     }, 
     "shadertext2_pdf-mac.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
-          7418036626921509657
+          1130381424781291926
         ]
       ], 
       "ignore-failure": false
     }, 
     "shadertext2_pdf-poppler.png": {
       "allowed-digests": [
         [
           "bitmap-64bitMD5", 
           15460442698959226201
         ]
@@ skipping 2057 matching lines @@
           10424380103329133154
         ]
       ], 
       "bugs": [
         1578
       ], 
       "reviewed-by-human": false
     }
   }
 }