Move util.c exports to util.h

miner.h

@@ -570,13 +570,6 @@ struct thr_info {
 	bool	work_restart;
 };
 
-extern int thr_info_create(struct thr_info *thr, pthread_attr_t *attr, void *(*start) (void *), void *arg);
-extern void thr_info_cancel(struct thr_info *thr);
-extern void thr_info_freeze(struct thr_info *thr);
-extern void nmsleep(unsigned int msecs);
-extern double us_tdiff(struct timeval *end, struct timeval *start);
-extern double tdiff(struct timeval *end, struct timeval *start);
-
 struct string_elist {
 	char *string;
 	bool free_me;

util.h

@@ -42,10 +42,17 @@
 #define JSON_LOADS(str, err_ptr) json_loads((str), (err_ptr))
 #endif
 
+struct thr_info;
 struct pool;
 enum dev_reason;
 struct cgpu_info;
+int thr_info_create(struct thr_info *thr, pthread_attr_t *attr, void *(*start) (void *), void *arg);
+void thr_info_freeze(struct thr_info *thr);
+void thr_info_cancel(struct thr_info *thr);
+void nmsleep(unsigned int msecs);
 void cgtime(struct timeval *tv);
+double us_tdiff(struct timeval *end, struct timeval *start);
+double tdiff(struct timeval *end, struct timeval *start);
 bool stratum_send(struct pool *pool, char *s, ssize_t len);
 bool sock_full(struct pool *pool);
 char *recv_line(struct pool *pool);