If administrative privileges are required check that user has
administrative priviliges during console installtion. If user does not
have administrative privileges then inform the user and exit.
If administrative privileges are required, check that the user has
administrative priviliges during automatic installation. If user does
not have administrative privileges then inform the user and exit.
- Console/Auto installations on Unix systems should just exist and
  inform use to run the application as an administrative user
- Console/Auto installations on Windows will bring up the UAC and
  re-launch the application with proper permissions
- Ensure that installation is only attempted to re-launch for Windows
Merge branch 'master' into privileges
Update test to accomdate updated method.
For console/auto installation ensure to pass in all the original
arguments when relaunching with administrative permissions.
Ensure that uninstaller can only be run with correct privileges.
Merge pull request #256 from mtjandra/IZPACK-1045

[IZPACK-1045] - Do not ignore privileged option for console and automatic installations