Use QTEST_GUILESS_MAIN

Allowing the tests to pass without a running X server.

autotests/kadatetimetest.cpp

@@ -37,7 +37,7 @@ using KAlarmCal::KADateTime;
 
 //TODO: test new methods
 
-QTEST_MAIN(KADateTimeTest)
+QTEST_GUILESS_MAIN(KADateTimeTest)
 
 
 namespace KAlarmCal

autotests/kaeventtest.cpp

@@ -36,7 +36,7 @@ using namespace KHolidays;
 
 #include <QtTest>
 
-QTEST_MAIN(KAEventTest)
+QTEST_GUILESS_MAIN(KAEventTest)
 
 namespace
 {