Added ThrottleAt config

EcAlerter.h

@@ -346,6 +346,10 @@
  *   <desc>A boolean saying whether a clear alert should supersede the
  *     original message or simply act as a new version with the same
  *     message identifier.</desc>
+ *   <term>ThrottleAt</term>
+ *   <desc>An integer in the range 1 to 3600 saying how many alerts may
+ *     be sent to an <em>Other</em> destination per hour.  Any configuration
+ *     outside this range results in the default of 12 being used.</desc>
  * </deflist>
  *
  * <p>When an EcAlerter instance is used by a Control server process,

EcAlerter.m

@@ -36,6 +36,8 @@
 #import "EcAlerter.h"
 #import "NSFileHandle+Printf.h"
 
+static uint32_t	throttleAt = 12;
+
 @interface EcAlertRegex: NSObject
 {
   NSRegularExpression	*regex;
@@ -123,8 +125,6 @@
 
 @implementation	EcAlertThrottle
 
-static uint32_t	throttleAt = 12;
-
 - (NSString*) description
 {
   char		buf[BUFSIZ];
@@ -395,6 +395,10 @@ replaceFields(NSDictionary *fields, NSString *template)
 
 - (BOOL) configureWithDefaults: (NSDictionary*)c
 {
+  int	i = [[c objectForKey: @"ThrottleAt"] intValue];
+
+  if (i <= 0 || i > 3600) i = 12;
+  throttleAt = i;
   debug = [[c objectForKey: @"Debug"] boolValue];
   quiet = [[c objectForKey: @"Quiet"] boolValue];
   supersede = [[c objectForKey: @"Supersede"] boolValue];