RFR 8242921: test/hotspot/jtreg/runtime/CompactStrings/TestMethodNames.java uses nashorn script engine

[Harold Seigel]

Hi,

Please review this small change to test TestMethodNames.java to no 
longer use nashorn to generate nonstandard method names. Instead, the 
names are hard-coded in a new .jcod file.

Open Webrev: http://cr.openjdk.java.net/~hseigel/bug_8242921/webrev/

JBS Bug: https://bugs.openjdk.java.net/browse/JDK-8242921

The test was run using Mach5 tiers 1-3 to check that it passed on 
multiple platforms and with multiple flags.

Thanks, Harold