Using the new multi-release jar feature, store compiled
module-info.class files into META-INF/versions/9 instead of the artifact
root. Hopefully, this will break fewer tools which do not support
module-info.class files because any sane tool should not do anything
with files in META-INF because before Java 9 that directory only
contained resources.
Upgrade some Maven plugins to newer versions which do not fail on
module-info.class files
#KT-21266 In Progress
The idea is to keep all declarations in the same packages from Kotlin's
point of view, but use JvmPackageName annotation to move them to another
JVM package, to avoid the split package problem which is otherwise
unsolvable when using module path on Java 9 (KT-19258).
In this commit, kotlin-stdlib-jre7/8 are moved to kotlin-stdlib-jdk7/8
and in the subsequent commit, -jre7/8 are restored. This is done in
order to make Git recognize this as a file move to preserve history.
Include new stdlib-jdkN artifacts in manifest version tests.
Ilya Gorbunov