Replace uses of $SED $basename.

Replace uses of $SED $basename.

* libltdl/config/ltmain.m4sh (func_mode_link): Replace instances
of `$ECHO ... | $SED' with calls to func_basename.
* libtoolize.m4sh (func_copy, func_serial)
(func_massage_aclocal_DATA): Likewise, replace with
func_dirname_and_basename.
* tests/defs.m4sh (func_configure_nofail, func_make, func_exec):
Likewise.

Signed-off-by: Ralf Wildenhues <Ralf.Wildenhues@gmx.de>