Changed the location of unittest.h

testcode/lib/strcat-test.c

@@ -1,5 +1,5 @@
-#include <unittest.h>
 #include <string.h>
+#include "unittest.h"
 
 #define SourceStringSize 257                            // test correct page passing (>256)
 

testcode/lib/strrchr-test.c

@@ -1,5 +1,5 @@
-#include <unittest.h>
 #include <string.h>
+#include "unittest.h"
                                                     
 static char TestString[] = "01234567890123456789";  // two times the same string
 static char Found[256];