Bug 926975 - Update Thunderbird installer for new certificate issuers. r=Standard8

mail/installer/windows/nsis/defines.nsi.in

@@ -24,7 +24,7 @@
 !define BrandFullName         "${BrandFullNameInternal}${PreReleaseSuffix}"
 
 !define CERTIFICATE_NAME      "Mozilla Corporation"
-!define CERTIFICATE_ISSUER    "Thawte Code Signing CA - G2"
+!define CERTIFICATE_ISSUER    "DigiCert Assured ID Code Signing CA-1"
 
 # NO_INSTDIR_FROM_REG is defined for pre-releases which have a PreReleaseSuffix
 # (e.g. Alpha X, Beta X, etc.) to prevent finding a non-default installation

mail/installer/windows/nsis/maintenanceservice_installer.nsi

@@ -210,7 +210,7 @@ Section "MaintenanceService"
   ; These keys are used to bypass the installation dir is a valid installation
   ; check from the service so that tests can be run.
   ; WriteRegStr HKLM "${FallbackKey}\0" "name" "Mozilla Corporation"
-  ; WriteRegStr HKLM "${FallbackKey}\0" "issuer" "Thawte Code Signing CA - G2"
+  ; WriteRegStr HKLM "${FallbackKey}\0" "issuer" "DigiCert Assured ID Code Signing CA-1"
   ${If} ${RunningX64}
     SetRegView lastused
   ${EndIf}