Add individual timeout support for pre/post/ready scripts

Syntax:
    [pre|post|ready]:[0-3600,]/path/to/script

Description:
    Before this patch all pre/post/ready scripts used the global kill
    delay as timeout.  After this patch it is possible to disable the
    timeout as well as set a timeout >60, which is max kill delay.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>

src/svc.h

@@ -197,8 +197,11 @@ typedef struct svc {
 	char	       desc[MAX_STR_LEN];
 	char	       env[MAX_CMD_LEN];
 	char	       pre_script[MAX_CMD_LEN];
+	int	       pre_tmo;
 	char	       post_script[MAX_CMD_LEN];
+	int	       post_tmo;
 	char	       ready_script[MAX_CMD_LEN];
+	int	       ready_tmo;
 
 	/*
 	 * Used to forcefully kill services that won't shutdown on