fixed name of XCode project

Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
target renamed to ObjCKit

Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
clarification of some action

Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
clarification to some global variables

Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
improved readibility of rules; made comment processing simple grammar rules; reworked handling of @ tokens

Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
udecode @ separately as AT_TOKEN and make yacc grammar switch between keyword tables; improved comment handling a little and commented about problematic cases

Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>