Remove Distribution.plist; replace with a heredoc / process substitution in script/package

[rgoldberg]

Remove Distribution.plist; replace a with heredoc / process substitution in script/package.

[phatblat]

The Distribution.plist file is the config for generating the macOS installer .pkg. Is there a newer way to build them?

[rgoldberg]

@phatblat The idea was just to use process substitution (probably a file-based =(printf …), but a pipe-based<(printf …) if the latter will work, which it probably won't) to provide the content from Distribution.plist to the productbuild call in script/package, so the details are in the script & we don't have a file sitting in git that's only used in one place.

[phatblat]

Ah, that's a good idea. It can just be a heredoc input in a script.

[rgoldberg]

Resolved by #640.