RFR 8191736: replace javah w/ javac in jdk tests

[Alexandre (Shura) Iline]

Hi.

Please take look on this quick fix of removing remains of javah usages from 
test/jdk.

Bug: https://bugs.openjdk.java.net/browse/JDK-8191736
Webrev: http://cr.openjdk.java.net/~shurailine/8191736/webrev.00/

Thank you.

Shura