Foundation: fixed typo which made a compile problem

Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
AppKit: made NibTextX11 run better

Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
mySTEP.make: unset more variables for recursive build; especially DEBIAN_DEPENDS or the subproject would inherit the dependenices unless it defines its own

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