ObjC: added some notes describing direction of future work

Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
Merge branch 'master' of ssh://git.goldelico.com/mySTEP
Merge branch 'master' of ssh://git.goldelico.com/mySTEP
ObjC: fixed problem printing some trees

Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
ObjC: extended evaluator a little

Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
ObjC: eliminated empty node types

Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
objc: removed some test print code

Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
ObjC: tried to improve parsing of functioncalls

Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
ObjCKit: improvements for concatenated strings; property-attributes; declarators; connecting methods and classes

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