branch-2-0 tests: linux-dietlibc

[Ralf Wildenhues]

Good news:

i686-pc-linux-dietlibc  5 of 114 tests failed
(with CC="diet-dyn gcc")
tests/mdemo/mdemo segfaults after mdemo-conf.test, same with
mdemo2/mdemo2, the rest are expected f77-exec failures (because diet-dyn
is C only).  The mdemo* failures might even be dietlibc's problems,
have not looked at these yet.


It doesn't fare as well with the static dietlibc compilation mode:
                        16 of 70 tests failed (44 tests were not run)

Seems one failure point is that libtool does not create
  libltdl/.libs/libltdlcS.o
which causes undef'd symbol lt_libltdlc_LTX_preloaded_symbols in
the mdemo* stuff.  The other is that it obviously doesn't treat
it as a static-only system (because libtool does not know of it),
causing many link errors.  The f77demo configure script breaks
spectacularly by outputting its own contents after
| configure: error: linking to Fortran libraries from C fails

Any hints as to where I should start looking?  Is libltdlc.la even
supposed to be used by a completely static build?

Regards,
Ralf