unity/unity_config.h: changed configuration for setjmp usage

For some reason after use modified context save routine, the local unit test
app were crashed, the reason behind this resides on setjmp usage of test_runner,
since this feature seems to not be used for nothing special (just was a default config),
I changed the unity_config to replace the setjmp macros, this sounds less hacky.

components/unity/include/unity_config.h

@@ -26,6 +26,7 @@
 #endif
 
 #define UNITY_EXCLUDE_TIME_H
+#define UNITY_EXCLUDE_SETJMP_H
 
 void unity_flush(void);
 void unity_putc(int c);