Allow command line tool specs to be extended by BuildSettingsExtension specs and an additional task producer extension point#698

jakepetroules merged 1 commit intoswiftlang:release/6.2swiftlang/swift-build:release/6.2from

jakepetroules:eng/PR-spec-extensions-release/6.2jakepetroules/swift-build:eng/PR-spec-extensions-release/6.2Copy head branch name to clipboard