keep ( expr ) as separate node until removed by simplifier

Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
created better regex for C style comments

Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
added archiving to the node tree

Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
ObjC: fixed bug in script driver

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