Separation of Gradle prerequisites to dependencies and build tools is wrong

[grv87]

They should be separated differently.

Suppose that compile depends on A. Then testRuntime depends on A too. Suppose that it also depends on B.

Current behavior:

1. updateBuildTools updates A and B for testRuntime but does not touch A for compile.
2. updateDependencies updates A for compile but not for testRuntime.

Correct behavior:

1. updateBuildTools updates B for testRuntime but does not touch A for both compile and testRuntime.
2. updateDependencies updates A for both compile and testRuntime.

See:

• https://discuss.gradle.org/t/how-to-force-a-dependency-version-while-also-substituting-a-transitive-dependency/26759
• https://github.com/gradle/gradle/issues/3181