support building scaladoc

[johnynek]

this might be an optional output in the default scala rules (like the deploy jar) or we could use an another approach.

[ittaiz]

What do the java rules do with javadoc?

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On Thu, 15 Jun 2017 at 20:59 P. Oscar Boykin ***@***.***> wrote: this might be an optional output in the default scala rules (like the deploy jar) or we could use an another approach. — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#230>, or mute the thread <https://github.com/notifications/unsubscribe-auth/ABUIF-bKp2gngbDcev-KVUtOHKyLq5I8ks5sEWZLgaJpZM4N7gDK> .

[pauldraper]

Community implementations, but nothing in core java rules.

bazelbuild/bazel#446