Merge #1732

1732: testsuite: Handle Windows carriage returns properly r=CohenArthur a=CohenArthur

In dg-output, check for \r* carriage returns to make sure execution tests pass on windows platforms

gcc/testsuite/ChangeLog:

	* rust/execute/torture/builtin_macro_cfg.rs: Handle carriage returns properly
	* rust/execute/torture/builtin_macro_concat.rs: Handle carriage returns properly
	* rust/execute/torture/builtin_macro_env.rs: Handle carriage returns properly
	* rust/execute/torture/builtin_macro_include_bytes.rs: Handle carriage returns properly
	* rust/execute/torture/builtin_macro_include_str.rs: Handle carriage returns properly
	* rust/execute/torture/builtin_macro_line.rs: Handle carriage returns properly
	* rust/execute/torture/builtin_macros1.rs: Handle carriage returns properly
	* rust/execute/torture/builtin_macros3.rs: Handle carriage returns properly
	* rust/execute/torture/cfg1.rs: Handle carriage returns properly
	* rust/execute/torture/cfg2.rs: Handle carriage returns properly
	* rust/execute/torture/cfg3.rs: Handle carriage returns properly
	* rust/execute/torture/cfg4.rs: Handle carriage returns properly
	* rust/execute/torture/coercion1.rs: Handle carriage returns properly
	* rust/execute/torture/coercion2.rs: Handle carriage returns properly
	* rust/execute/torture/extern_mod4.rs: Handle carriage returns properly
	* rust/execute/torture/helloworld1.rs: Handle carriage returns properly
	* rust/execute/torture/helloworld2.rs: Handle carriage returns properly
	* rust/execute/torture/issue-1198.rs: Handle carriage returns properly
	* rust/execute/torture/issue-1231.rs: Handle carriage returns properly
	* rust/execute/torture/issue-1232.rs: Handle carriage returns properly
	* rust/execute/torture/issue-1249.rs: Handle carriage returns properly
	* rust/execute/torture/issue-1436.rs: Handle carriage returns properly
	* rust/execute/torture/issue-1496.rs: Handle carriage returns properly
	* rust/execute/torture/issue-647.rs: Handle carriage returns properly
	* rust/execute/torture/issue-845.rs: Handle carriage returns properly
	* rust/execute/torture/issue-851.rs: Handle carriage returns properly
	* rust/execute/torture/issue-858.rs: Handle carriage returns properly
	* rust/execute/torture/issue-976.rs: Handle carriage returns properly
	* rust/execute/torture/macros10.rs: Handle carriage returns properly
	* rust/execute/torture/macros11.rs: Handle carriage returns properly
	* rust/execute/torture/macros12.rs: Handle carriage returns properly
	* rust/execute/torture/macros13.rs: Handle carriage returns properly
	* rust/execute/torture/macros14.rs: Handle carriage returns properly
	* rust/execute/torture/macros2.rs: Handle carriage returns properly
	* rust/execute/torture/macros22.rs: Handle carriage returns properly
	* rust/execute/torture/macros29.rs: Handle carriage returns properly
	* rust/execute/torture/macros3.rs: Handle carriage returns properly
	* rust/execute/torture/macros30.rs: Handle carriage returns properly
	* rust/execute/torture/macros31.rs: Handle carriage returns properly
	* rust/execute/torture/macros7.rs: Handle carriage returns properly
	* rust/execute/torture/macros8.rs: Handle carriage returns properly
	* rust/execute/torture/macros9.rs: Handle carriage returns properly
	* rust/execute/torture/match1.rs: Handle carriage returns properly
	* rust/execute/torture/match2.rs: Handle carriage returns properly
	* rust/execute/torture/match3.rs: Handle carriage returns properly
	* rust/execute/torture/match_bool1.rs: Handle carriage returns properly
	* rust/execute/torture/match_byte1.rs: Handle carriage returns properly
	* rust/execute/torture/match_char1.rs: Handle carriage returns properly
	* rust/execute/torture/match_int1.rs: Handle carriage returns properly
	* rust/execute/torture/match_loop1.rs: Handle carriage returns properly
	* rust/execute/torture/match_range1.rs: Handle carriage returns properly
	* rust/execute/torture/match_range2.rs: Handle carriage returns properly
	* rust/execute/torture/match_tuple1.rs: Handle carriage returns properly
	* rust/execute/torture/method1.rs: Handle carriage returns properly
	* rust/execute/torture/method2.rs: Handle carriage returns properly
	* rust/execute/torture/method3.rs: Handle carriage returns properly
	* rust/execute/torture/method4.rs: Handle carriage returns properly
	* rust/execute/torture/operator_overload_1.rs: Handle carriage returns properly
	* rust/execute/torture/operator_overload_10.rs: Handle carriage returns properly
	* rust/execute/torture/operator_overload_11.rs: Handle carriage returns properly
	* rust/execute/torture/operator_overload_12.rs: Handle carriage returns properly
	* rust/execute/torture/operator_overload_2.rs: Handle carriage returns properly
	* rust/execute/torture/operator_overload_4.rs: Handle carriage returns properly
	* rust/execute/torture/operator_overload_5.rs: Handle carriage returns properly
	* rust/execute/torture/operator_overload_6.rs: Handle carriage returns properly
	* rust/execute/torture/operator_overload_7.rs: Handle carriage returns properly
	* rust/execute/torture/operator_overload_8.rs: Handle carriage returns properly
	* rust/execute/torture/operator_overload_9.rs: Handle carriage returns properly
	* rust/execute/torture/str-layout1.rs: Handle carriage returns properly
	* rust/execute/torture/str-zero.rs: Handle carriage returns properly
	* rust/execute/torture/trait1.rs: Handle carriage returns properly
	* rust/execute/torture/trait10.rs: Handle carriage returns properly
	* rust/execute/torture/trait11.rs: Handle carriage returns properly
	* rust/execute/torture/trait12.rs: Handle carriage returns properly
	* rust/execute/torture/trait13.rs: Handle carriage returns properly
	* rust/execute/torture/trait2.rs: Handle carriage returns properly
	* rust/execute/torture/trait3.rs: Handle carriage returns properly
	* rust/execute/torture/trait4.rs: Handle carriage returns properly
	* rust/execute/torture/trait5.rs: Handle carriage returns properly
	* rust/execute/torture/trait6.rs: Handle carriage returns properly
	* rust/execute/torture/trait7.rs: Handle carriage returns properly
	* rust/execute/torture/trait8.rs: Handle carriage returns properly
	* rust/execute/torture/trait9.rs: Handle carriage returns properly

Co-authored-by: Arthur Cohen <arthur.cohen@embecosm.com>