Qualified names removed from EMV2 type aliases

[philip-alldredge]

Summary

When making a change to the error model library via the EMF model, the produced error annex library source may remove qualified names to point incorrect error types.

Expected and Current Behavior

When making a change to the error model, references should serialize to the correct qualified names.

Steps to Reproduce

1. Create model with the following packages.
2. Make a change to the typelib error model library.
3. t1_alias no longer reference the correct t1.

package typelib
public
	annex EMV2 {**
		error types
			t1: type;
			t2: type;
			t1_alias renames type other_typelib::t1;
			t2_alias renames type t2;
			t3_alias renames type other_typelib::t3;
		end types;
	**};
end typelib; 

package other_typelib
public
		annex EMV2 {**
		error types
			t1 : type;
			t3 : type;
		end types;		
		**} ;
end other_typelib;

Example Resulting Model

package typelib
public
	annex EMV2 {**
		error types
			t1: type;
			t2: type;
			t1_alias renames type t1; -- THIS IS INCORRECT
			t2_alias renames type t2;
			t3_alias renames type other_typelib::t3;
			new_error_type: type;
		end types;
	**};
end typelib; 

[lwrage]

Bug in the emv2 cross-reference serializer. It always prefers local names if present even if the reference is to another package.