function resolvePackages() {
	var i;
	if ( PKGS ) {
		return PKGS;
	}
	PKGS = [];
	for ( i = 0; i < ALIASES.length; i++ ) {
		PKGS.push( [ alias2pkg( ALIASES[i] ), ALIASES[i] ] );
	}
	return PKGS;
}
Resolves package names for all aliases.

@private
@returns {ArrayArray} pairs of package names and corresponding aliases