How difficult would it be to change `kotlinc` to read the package declaration on java sources to det...

# build-tools

[dsyang]

How difficult would it be to change kotlinc to read the package declaration on java sources to determine fq-names? Bonus question, how difficult would it be for us to pass arbitrary .java files instead of folders into kotlinc-jvm?

[alexey.tsvetkov]

// cc @udalov ^