Add testHarnessDone

src/libCom/misc/epicsUnitTest.h

@@ -40,9 +40,11 @@ epicsShareFunc int  testDone(void);
 
 typedef int (*TESTFUNC)(void);
 epicsShareFunc void testHarness(void);
+epicsShareFunc void testHarnessExit(void *dummy);
 epicsShareFunc void runTestFunc(const char *name, TESTFUNC func);
 
 #define runTest(func) runTestFunc(#func, func)
+#define testHarnessDone() testHarnessExit(0)
 
 #ifdef __cplusplus
 }