RFR: JDK-8067013: Rename the com.oracle.java.testlibary package

[Alexander Kulyakhtin]

Hi,

Could I, please, have a review of this tests-only change:

https://bugs.openjdk.java.net/browse/JDK-8067013: Rename the com.oracle.java.testlibary package
Webrev: http://cr.openjdk.java.net/~akulyakh/8067013/webrev.00/index.html

The change renames com.oracle.java.testlibrary package to jdk.test.lib package:

The directory structure have been changed under the hotspot/test/testlibrary/ to provide for the package renaming,
Everywhere in the hotspot/test files import statements have been changed as needed.  

Best regards,
Alex