codesign binaries after running otool because running otool makes previous signatures invalid.

external/buildscripts/build_all_osx.pl

@@ -181,10 +181,10 @@ sub MergeIntoFatBinary
 
 	if ($isExe)
 	{
-		system("codesign", "--entitlements", $buildscriptsdir . "/entitlements.plist", "-s", "-", "$binaryOutput") eq 0 or die("Failed to codesign $binaryOutput!");
+		system("codesign", "--entitlements", $buildscriptsdir . "/entitlements.plist", "-s", "-", "-f", "$binaryOutput") eq 0 or die("Failed to codesign $binaryOutput!");
 	}
 	else
 	{
-		system("codesign", "-s", "-", "$binaryOutput") eq 0 or die("Failed to codesign $binaryOutput!");
+		system("codesign", "-s", "-", "-f", "$binaryOutput") eq 0 or die("Failed to codesign $binaryOutput!");
 	}
 }

external/buildscripts/perl_lib/Tools.pm

@@ -22,6 +22,9 @@ sub InstallNameTool
   system("install_name_tool -id $pathtoburnin $target") eq 0 or die("Failed running install_name_tool");
   print "running otool after:\n";
   system("otool","-L",$target);
+
+  print "running codesign on $target:\n";
+  system("codesign", "-s", "-", "-f", $target);
 }
 
 sub GitClone