RFR: 8144874: Reimplement TraceClassResolution with UL

[Max Ockner]

Hello all,
Please review my code for another Unified Logging conversion.

Bug: https://bugs.openjdk.java.net/browse/JDK-8144874
Webrev: http://cr.openjdk.java.net/~mockner/classresolve/

Summary: "-XX:+TraceClassResolution" reimplemented using Unified Logging 
with classresolve tag and Info level. Support is maintained for 
TraceClassResolution using the alias table.

Tested with: Selection Resolution tests, jtreg tests. This change also 
adds a jtreg test for the implementation of classresolve, and for the 
maintained support of TraceClassResolution.

Thanks,
Max