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'.

Both 'head -n 1' and 'sed 1q' exit after printing the first line, which closes
the pipe and kills the compiler's process leaving it no chance to clean any
temporary files it might have created (e.g. Intel compiler creates 'a.out' when
it is called with additional flags like -I, -L, etc., which is the case when
$CC/$FC is an MPI wrapper.

And make sure that the result is the same as for Fortran (FC).

The conditional indicates that FC is available and all required compiler flags
are known.