Link directly to a JAR

[nicolasstucki]

No description provided.

[smarter]

What's the motivation here?

[nicolasstucki]

The motivation is to create a tool that given the classpath and an entry point, will link all classes that have a tasty. Later on optimizing them with the linker. The output is a jar to avoid overriding class files that may be in the output directory, making sure that the use of the tool is idempotent.

[smarter]

Why not use -d foo.jar to write classfiles directly to a jar instead of an output directory? I think scalac has this feature

[nicolasstucki]

That was the intended effects thought I took a complicated solution. I will adapt it to the -d foo.jar scheme.

[nicolasstucki]

I factored a part that handles JARs in #3382.