NUMTYPE is never defined outside this header. So this complexity can go.

There is no need to deliver nranges.hxx as there is only itemset.cxx using it.

NUMTYPE -> sal_uInt16
NUMTYPE_ARG -> int
SfxNumRanges -> SfxUShortRanges

Change-Id: I27027f9ec83ebf456bb545763954884d5de227b3