* 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.

Update CI scripts for NAG on Mistral: load ruby module needed to generate Fortran interface file for dist archive.

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'.