Fix for test_bn regular expression to work on Windows using MSYS. PR#3346

test/Makefile

@@ -289,7 +289,7 @@ test_bn: $(BNTEST)$(EXE_EXT) $(EXPTEST)$(EXE_EXT) bctest
 	@../util/shlib_wrap.sh ./$(BNTEST) >tmp.bntest
 	@echo quit >>tmp.bntest
 	@echo "running bc"
-	@<tmp.bntest sh -c "`sh ./bctest ignore`" | $(PERL) -e '$$i=0; while (<STDIN>) {if (/^test (.*)/) {print STDERR "\nverify $$1";} elsif (!/^0$$/) {die "\nFailed! bc: $$_";} else {print STDERR "."; $$i++;}} print STDERR "\n$$i tests passed\n"'
+	@<tmp.bntest sh -c "`sh ./bctest ignore`" | $(PERL) -e '$$i=0; while (<STDIN>) {if (/^test (.*)/) {print STDERR "\nverify $$1";} elsif (!/^0\r?$$/) {die "\nFailed! bc: $$_";} else {print STDERR "."; $$i++;}} print STDERR "\n$$i tests passed\n"'
 	@echo 'test a^b%c implementations'
 	../util/shlib_wrap.sh ./$(EXPTEST)