Change the way we ignore the default runner.

src/unity.c

@@ -1801,7 +1801,7 @@ void UnityMessage(const char* msg, const UNITY_LINE_TYPE line)
 
 /*-----------------------------------------------*/
 /* If we have not defined our own test runner, then include our default test runner to make life easier */
-#ifndef RUN_TEST
+#ifdef UNITY_SKIP_DEFAULT_RUNNER
 void UnityDefaultTestRun(UnityTestFunction Func, const char* FuncName, const int FuncLineNum)
 {
     Unity.CurrentTestName = FuncName;

src/unity_internals.h

@@ -481,6 +481,7 @@ void UnitySetTestFile(const char* filename);
 void UnityConcludeTest(void);
 
 #ifndef RUN_TEST
+#define UNITY_SKIP_DEFAULT_RUNNER
 void UnityDefaultTestRun(UnityTestFunction Func, const char* FuncName, const int FuncLineNum);
 #endif