RFR: JDK-8210919 Remove statically linked libjli on Windows

[Magnus Ihse Bursie]

For historic reasons, we've produced both a dynamic and a static library 
of JLI on Windows. It's been recently determined (see 
http://mail.openjdk.java.net/pipermail/build-dev/2018-September/023234.html) 
that this is no longer needed, and we should simplify the code.

Bug: https://bugs.openjdk.java.net/browse/JDK-8210919
WebRev: 
http://cr.openjdk.java.net/~ihse/JDK-8210919-remove-static-linked-jli-on-windows/webrev.01

/Magnus