[14] RFR(S): 8193042: NativeLookup::lookup_critical_entry() should only load shared library once

[Christian Hagedorn]

Hi

Please review the following enhancement:
http://cr.openjdk.java.net/~thartmann/8193042/webrev.00/
https://bugs.openjdk.java.net/browse/JDK-8193042

This avoids repeated loads/unloads of the same shared library.

Thanks!

Best regards,
Christian