can't set -Xmx properly

Created by: darmbrust

Trying to set the memory limits via -Xmx4G, and finding that I can't, because it is always putting in its own value (why would this be hardcoded?)

[INFO] Execute:Java13CommandLauncher: Executing '/opt/java/jdk_x64_1.8.0_65/jre/bin/java' with arguments: '-cp' '' '-cp' '/mnt/STORAGE/repository/org/jruby/jruby-complete/9.0.4.0/jruby-complete-9.0.4.0.jar' '-Xmx384m' '-Xmx4G'

where did the 384m come from?

The plugin shouldn't specify any max at all by default, just let the JVM select... it will do a much better job than 384m.