Added undefined behavior sanitizer.

Combined common sanitizer flags.
Added fuzzers.

fuzzing/fuzzing.h

@@ -0,0 +1,15 @@
+#ifndef	_FUZZING_H_
+#define	_FUZZING_H_
+
+#include <stdint.h>
+#include <stddef.h>
+
+
+void	fuzzing_tick(void);
+
+void	fuzzing_throttle(void);
+
+bool	fuzzing_testinput(const uint8_t * data, size_t size);
+
+
+#endif	/* !_FUZZING_H_ */