internal

Address code review comment

Move Swift source compatibility to `SwiftTargetMachine` on `SwiftBinary`

This commit still doesn't consider the source compatibility when

selecting the tool chain.

Break association between current and software model type

Move `NativePlatform` getter to internal type.

Replace all usages of the property factory methods on `ProjectLayout` and `DefaultTask` with the factory methods on `ObjectFactory`.

Expose the variant name and header directories for each C++ binary in the C++ tooling model.

Rework construction of the native binary models so that the binary names are not formatted and parsed a bunch of times during construction and so do not lose information.

Allow C++ and Swift binary specific dependencies to express various constraints, such as requiring a specific branch.

Added methods to the various native component types to allow implementation and API dependencies to be declared on the component instance instead of on the project's `dependencies` block, for consistency with the binaries.

Added methods to `SwiftBinary` to allow implementation dependencies to be declared for the binary.

Added a convenience to allow build logic to be notified when a particular binary received from a `BinaryCollection` has been configured.

Defer creation of the tasks and configurations for a native binary until the binary is realized, rather than when the binary is created.

Changed the `BinaryCollection` implementation to defer firing the 'when known' event for a binary until just before the binary is configured. Restructured parts of various plugins to react to binaries becoming known rather than making assumptions about the things that exist when the binary is created.

Moved responsibility for creating the 'assemble' task for each variant of the main component into the `NativeBasePlugin`.

Added an abstraction to represent a component with output files.

Hoist SwiftBinaryContainer up to a more generic NativeBinaryContainer

Moved package o.g.language.internal.nativelang -> o.g.language.nativebase.internal

Renamed package org.gradle.nativebinaries -> org.gradle.nativeplatform

Move language-specific classes out of ‘cpp’ into ‘language-native’

+review REVIEW-5128