Returns a list of all the target-independent MI features
	 * supported by the GDB that is being used. Consult the GDB MI documentation
	 * for the MI -list-features command for the possible names of features.
	 * 
	 * The return value is never null but may be an empty list.
Returns a list of all the target-independent MI features
	 * supported by the GDB that is being used. Consult the GDB MI documentation
	 * for the MI -list-features command for the possible names of features.
	 * 
	 * The return value is never null but may be an empty list. | IGDBControl.java