* Add a dummy x86_64 slice to all our native libraries that don't have one. (#6848)
Apple's notarization tool has a bug where they incorrectly flag Mach-O
binaries without an x86_64 slice, so make sure all our libraries have one.
* Jenkinsfile notarization (#6869)
* Add in notarization script for xamarin.mac/xamarin.iOS
* Flatten the list to get rid of the braces
* Add in keychain password
* Add login.keychain back in to access codesigning certificates
* Always sign pkgs, upload notarized copies
* Enable ios notarization and make notarized pkgs public
* Make notarization non-fatal
* Publish GH statuses for notarized PKGs
* Don't forget to declare URI variables for notarized pkgs
* report proper package links
* [jenkins] Improve package reporting.
* Use dummy function name which our tests won't complain about.
We already have the information we need to generate these function
declaration, so this prevents the need for keeping information in two
different places up-to-date.