More non C89 compliant comments

test/testautomation_suites.h

@@ -8,7 +8,7 @@
 
 #include "SDL_test.h"
 
-// Test collections
+/* Test collections */
 extern SDLTest_TestSuiteReference audioTestSuite;
 extern SDLTest_TestSuiteReference clipboardTestSuite;
 extern SDLTest_TestSuiteReference eventsTestSuite;
@@ -27,7 +27,7 @@ extern SDLTest_TestSuiteReference syswmTestSuite;
 extern SDLTest_TestSuiteReference timerTestSuite;
 extern SDLTest_TestSuiteReference videoTestSuite;
 
-// All test suites
+/* All test suites */
 SDLTest_TestSuiteReference *testSuites[] =  {
     &audioTestSuite,
     &clipboardTestSuite,