compile with YYDEBUG enabled

Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
ObjC: removed duplicate int yydebug;

Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
added some variables for testing

Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
ObjC: renamed declaration to var_declaration to make searching through source code easier

Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
ObjC: fixed path to correctly cross-compile

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