protected StringBuilder addNativeLibraryPath(StringBuilder jvmArguments) {
		return jvmArguments.append(" -Djna.library.path=").append(new File(baseDirectory.getFile(), "/lib"))
				.append(" ");
	}
Build JVM Arguments.

@return generated jvm arguments
ngrinder-core/src/main/java/net/grinder/engine/agent/PropertyBuilder.java