LeeTibbert

Whist investigating Issue #4420, I encountered a situation where `ServerSocketTest` would execute on Scala Native but not on JVM. This even though the test was in a `shared` source sub-tree....

javalib FileChannel#read(buffer, position) does not preserve original source position; does not match JVM

1

Whilst trying an alternate implementation of javalib `FileChannelImpl#transfer*`, I discovered, much to my dismay & wasted time, that `FileChannel#read(buffer, position)` does not preserve the entry position of the readable channel....