testsuite: The expect framework might introduce CR in output

When running tests using the "sim" config, the command is launched in
non-readonly mode and the text retrieved from the expect command will
then replace all LF with CRLF. (The problem can be found in sim_load
where it calls remote_spawn without an input file).

libstdc++-v3/ChangeLog:

	* testsuite/27_io/print/1.cc: Allow both LF and CRLF in test.
	* testsuite/27_io/print/3.cc: Likewise.

Signed-off-by: Torbjörn SVENSSON <torbjorn.svensson@foss.st.com>

libstdc++-v3/testsuite/27_io/print/1.cc

@@ -18,7 +18,7 @@ void
 test_println_default()
 {
   std::println("I walk the line");
-  // { dg-output "I walk the line\n" }
+  // { dg-output "I walk the line\r?\n" }
 }
 
 void

libstdc++-v3/testsuite/27_io/print/3.cc

@@ -13,7 +13,7 @@ test_println_blank()
   std::print("1");
   std::println();
   std::println("2");
-  // { dg-output "1\n2" }
+  // { dg-output "1\r?\n2" }
 }
 
 void