Authenticate a user against the Linux native method
Script waits two mandatory arguments

	hex packed username
	hex packed password

it will print at screen the two lines

	1st)  0 for succesfull login  or a message of why the login was failed
	2rd)  A comma delimited group list, the user is member

e.g for success

	./LinuxNative.pl 726f6f74 70617373776f7264

		0
		root,ftp,video,http

or at failure

	./LinuxNative.pl 726f6f74 7061737

		Wrong password

If you run this script as a non privilidge user you must add the user to sudoers e.g.
visudo

	# Defaults    requiretty

	dancer ALL=NOPASSWD: /usr/share/perl5/site_perl/Dancer2/Plugin/scripts/LinuxNative.pl

George Mpouras, george.mpouras@yandex.com, Athens Greece
7 June 2016 : Initial version
9 July 2019 : Clean up the code
