git: openjdk/leyden: premain: Added test/hotspot/jtreg/premain/javac_helloworld start-up benchmark

[duke]

Changeset: 678d7f91
Author:    iklam <ilam3388 at gmail.com>
Date:      2023-08-15 17:19:04 +0000
URL:       https://git.openjdk.org/leyden/commit/678d7f91bfc469b95f3dabe99a34f0e3cd59aea1

Added test/hotspot/jtreg/premain/javac_helloworld start-up benchmark

+ test/hotspot/jtreg/premain/README.md
+ test/hotspot/jtreg/premain/javac_helloworld/HelloWorld.java
+ test/hotspot/jtreg/premain/javac_helloworld/Makefile
+ test/hotspot/jtreg/premain/javac_helloworld/run.sh
! test/hotspot/jtreg/premain/lib/premain-run.sh
! test/hotspot/jtreg/premain/simple/run.sh