* testsuite/sexp-conv-test: Use $EMULATOR when running test

programs. Also ignore \r for output in the non-canonical output
formats.

* testsuite/Makefile.in (check): Pass $(EMULATOR) in the
environment of run-tests.

Rev: nettle/testsuite/Makefile.in:1.15
Rev: nettle/testsuite/sexp-conv-test:1.4