configurator: Use native directory separator

Although Windows APIs generally permit "/" or "\\" for directory
separators in paths, cmd.exe does not recognize "./" when invoking
executables using a relative path and prints the following error:

    '.' is not recognized as an internal or external command,
    operable program or batch file.

Therefore, use "\\" when invoking tests on Windows.
Signed-off-by: Kevin Locke <kevin@kevinlocke.name>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>

tools/configurator/configurator.c

@@ -38,6 +38,12 @@
 #define OUTPUT_FILE "configurator.out"
 #define INPUT_FILE "configuratortest.c"
 
+#ifdef _WIN32
+#define DIR_SEP   "\\"
+#else
+#define DIR_SEP   "/"
+#endif
+
 static int verbose;
 
 enum test_style {
@@ -585,7 +591,7 @@ static bool run_test(const char *cmd, struct test *test)
 		free(output);
 		/* We run INSIDE_MAIN tests for sanity checking. */
 		if ((test->style & EXECUTE) || (test->style & INSIDE_MAIN)) {
-			output = run("./" OUTPUT_FILE, &status);
+			output = run("." DIR_SEP OUTPUT_FILE, &status);
 			if (!(test->style & EXECUTE) && status != 0)
 				errx(1, "Test for %s failed with %i:\n%s",
 				     test->name, status, output);