patch 7.4.2180
Problem:    There is no easy way to stop all timers.  There is no way to
            temporary pause a timer.
Solution:   Add timer_stopall() and timer_pause().
diff --git a/src/proto/ex_cmds2.pro b/src/proto/ex_cmds2.pro
index 977f5c0..f241d37 100644
--- a/src/proto/ex_cmds2.pro
+++ b/src/proto/ex_cmds2.pro
@@ -22,6 +22,7 @@
 long check_due_timer(void);
 timer_T *find_timer(int id);
 void stop_timer(timer_T *timer);
+void stop_all_timers(void);
 void add_timer_info(typval_T *rettv, timer_T *timer);
 void add_timer_info_all(typval_T *rettv);
 int set_ref_in_timer(int copyID);