Instantiate octave_base_matrix and octave_base_scalar template classes * ov-base-mat-inst.cc: Add new file to explicitly instantiate template class octave_base_matrix with types that need to be exported from liboctinterp. * ov-base-scalar-inst.cc: Add new file to explicitly instantiate template class octave_base_scalar with types that need to be exported from liboctinterp. * ov-base-scalar-int-inst.cc: Add new file to explicitly instantiate template classes octave_base_int_matrix and octave_base_int_scalar with types that need to be exported from liboctinterp. * ov-base-mat.h, ov-base-scalar.h: Use macro for template export. Mark all member functions for export. * ov-bool-mat.cc, ov-bool-mat.h, ov-bool.h, ov-cell.cc, ov-cell.h, ov-ch-mat.cc, ov-ch-mat.h, ov-complex.cc, ov-complex.h, ov-cx-mat.cc, ov-cx-mat.h, ov-float.cc, ov-float.h, ov-float-complex.cc, ov-float-complex.h, ov-flt-cx-mat.cc, ov-flt-cx-mat.h, ov-flt-re-mat.cc, ov-flt-re-mat.h, ov-int16.cc, ov-int32.cc, ov-int64.cc, ov-int8.cc, ov-intx.h, ov-re-mat.cc, ov-re-mat.h, ov-scalar.cc, ov-scalar.h, ov-uint16.cc, ov-uint32.cc, ov-uint64.cc, ov-uint8.cc: Instantiate template classes octave_base_matrix, octave_base_scalar, octave_base_int_matrix, and octave_base_int_scalar only in one compilation unit. Move extern template class declarations to headers. * ov-base-int.cc: Remove includes that are not needed to prevent potentially unpredicted template instantiations. * ov-base-int.h: Add extern template declarations to avoid multiple instantiations of template class in different compilation units. Add export attributes to all member functions of template class. * ov-base-int.h: Use export attributes for template classes that better work cross-platform. * ov-base.h: Add export attributes to undefined functions. * ov-cell.cc: Move octave_base_matrix<cell> specializations to ov-base-mat-inst.cc. * libinterp/octave-value/module.mk: Add new files to build system. See: https://octave.discourse.group/t/5211

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#if defined (HAVE_CONFIG_H)
#  include "config.h"
#endif

#include "ov-base-scalar.cc"

// instantiate template class with types that need to be exported from library

template class OCTINTERP_API octave_base_scalar<bool>;
template class OCTINTERP_API octave_base_scalar<double>;
template class OCTINTERP_API octave_base_scalar<float>;
template class OCTINTERP_API octave_base_scalar<Complex>;
template class OCTINTERP_API octave_base_scalar<FloatComplex>;
template class OCTINTERP_API octave_base_scalar<octave_int8>;
template class OCTINTERP_API octave_base_scalar<octave_int16>;
template class OCTINTERP_API octave_base_scalar<octave_int32>;
template class OCTINTERP_API octave_base_scalar<octave_int64>;
template class OCTINTERP_API octave_base_scalar<octave_uint8>;
template class OCTINTERP_API octave_base_scalar<octave_uint16>;
template class OCTINTERP_API octave_base_scalar<octave_uint32>;
template class OCTINTERP_API octave_base_scalar<octave_uint64>;