This reverts commit f861459a.

The underlying functionality is incompatible with MPI parallelization.

This reverts commit 039619c6.

* Unfortunately, C array parameters cannot have the restrict attribute
  thus better document the array characteristic and let the compiler
  optimize with aliasing restrictions in place.

* The second dimension of rect has indeed as many dimensions as
  appropriate for the array being written, i.e. 2 or 3 depending on
  whether a z-axis exists.

* These variables are checked via the JSON files in PIO control setups
  and should not change type unless necessary. Consistency is not a
  necessity.

* The Debian patch that prevents implicit overlinking is
partially disabled: the respective monkey patch for libtool.m4
will be implemented later. For now, test.all.nv-21.3.0 ensures
that makefiles are compatible with the patch.

This reverts commit ca953660.

At least Automake 1.16.1 does not seem to have problems with this.

1. Patches that modify ltmain.sh only start with 1xx prefix.
2. Patches that modify any of m4 files start with 0xx prefix.

This partially reverts "Account for the case when YAXT and PPM are provided as '/path/to/lib/libname.a'."

Update CI scripts for Intel on Mistral: check whether the configure script removes '.libs' directory.

In contrast to the vanilla version of Libtool, the Debian one avoids
overlinking.

This enables building with versions of libtool that are patched to avoid
overlinking (e.g. on Debian systems). It is also a bad idea in general to rely
on negative side-effects, which overlinking is, and we try to avoid that.

As well as parallel 'make dist' and 'make distclean'.

This is similary to what we do for the parallel cksum tests.