This fixes an issue encountered after a recent upgrade from pyhdf 0.10.5 to 0.11.3. When reading an SDS of type `SDC.CHAR` with version 0.11.3, I'd get the following error:
```
In [2]: SD("MYD03.A2023213.0000.061.2023213152719.hdf").select("Scan Type").get()
---------------------------------------------------------------------------
ValueError                                Traceback (most recent call last)
Cell In[2], line 1
----> 1 SD("MYD03.A2023213.0000.061.2023213152719.hdf").select("Scan Type").get()

File ~/Code/pyhdf/pyhdf/SD.py:1920, in SDS.get(self, start, count, stride)
   1916 if not data_type in SDC.equivNumericTypes:
   1917     raise HDF4Error('get cannot currently deal with '\
   1918                      'the SDS data type')
-> 1920 return _C._SDreaddata_0(self._id, data_type, start, count, stride)

File ~/Code/pyhdf/pyhdf/hdfext.py:333, in _SDreaddata_0(sds_id, data_type, start, edges, stride)
    332 def _SDreaddata_0(sds_id, data_type, start, edges, stride):
--> 333     return _hdfext._SDreaddata_0(sds_id, data_type, start, edges, stride)

ValueError: data type must provide an itemsize
```
I tracked the problem down to use of `PyArray_SimpleNew` with typenum `NPY_STRING`, which fails because that type code requires a size specification. This change instead uses `PyArray_New` with an `itemsize` of 1, which reproduces the 0.10.5 `SDC.CHAR` read behavior. All the non-`NPY_STRING` type codes are fixed-size in which case `PyArray_New` ignores the `itemsize` argument so behavior for these type codes should be unaffected.

Fixes #67 
---------

Co-authored-by: Greg Quinn <greg.quinn@ssec.wisc.edu>

The Debian package failed to build as reported in [Debian Bug #1066395](https://bugs.debian.org/1066395).

This is fixed by also searching the [MultiArch](https://wiki.debian.org/Python/MultiArch#Python_code) path for the hdf4alt libraries.

As reported in #70, hdfi.h has been removed in HDF 4.3.0 which causes build failures.

Replacing the the include with hdf.h resolves this.

Closes: #70

… macOS

…rtifact action

… 3.10