use separate files for MArray, intNDArray, and range template forward decls * MArray-fwd.h, intNDArray-fwd.h, range-fwd.h: New files. * liboctave/array/module.mk: Update. * pr-output.h, ov-range.h, MArray-C.cc, MArray-d.cc, MArray-f.cc, MArray-fC.cc, MArray-i.cc, MArray-s.cc, MArray.cc, MArray.h, Range.h, dNDArray.h, fNDArray.h, idx-vector.h, intNDArray.h, sparse-qr.h, oct-inttypes.h: Use new header files to replace inline forward declarations of some template types.

--- a/liboctave/util/oct-inttypes.h	Sat Dec 04 09:13:12 2021 -0500
+++ b/liboctave/util/oct-inttypes.h	Mon Dec 06 14:12:11 2021 -0500
@@ -779,9 +779,7 @@
 { };
 
 template <typename T>
-class
-OCTAVE_API
-octave_int : public octave_int_base<T>
+class octave_int : public octave_int_base<T>
 {
 public: