Mass rebaseline of the rrect_* GMs

expectations/gm/Test-Mac10.8-MacMini4.1-GeForce320M-x86_64-Release/expected-results.json

 {
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   "expected-results": {
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@@ skipping 11814 matching lines @@
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     "rrect_clip_bw_pdf-native.png": {
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     "rrect_clip_bw_pdf-poppler.png": {
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@@ skipping 2995 matching lines @@
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       "bugs": [
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   }
 }