scalapack fix for 32-bit integer case: avoid dcopy

[edoapra]

This commit avoid using dcopy() when BLAS uses 32-bit integers to avoid any issue between 64-bit and 32-bit integers.
The previous code resulted in erroneous results on big endian architectures.
https://github.com/nwchemgit/nwchem/issues/864#issuecomment-1770549014

[bjpalmer]

I'm good with the changes.