Launching
	- Register installation type for your intepreter using a
	org.eclipse.dltk.launching.interpreterInstallTypes ext. point. Use a
	AbstractInterpreterInstallType class as base for implementation.
	
- Register launch configuration type using a
	org.eclipse.debug.core.launchConfigurationTypes ext. point. Use a
	AbstractScriptLaunchConfigurationDelegate as base for your launch
	delegate implementation.
	
- Add preference page for interpreter configuration.
	InterpretersBlock may be used as base for a configuration block. In
	fact you may use any another way for interpreter configuration, but for
	launching at least one interpreter should be registered in the
	workspace and be available for a ScriptRuntime class.
	
- Also you may add a shortcut for launching via
	org.eclipse.debug.ui.launchShortcuts. Use AbstractScriptLaunchShortcut
	as base for your implementation(then you'll should just point a
	language nature and configuration type inside).