Do not use SECONDS_IN_24H in nt_servc.cc.

This constant uses my_time.h, which inclusion is not desirable in nt_servc.cc

sql/nt_servc.cc

@@ -33,7 +33,7 @@ NTService::NTService()
 
     //time-out variables
     nStartTimeOut    = 15000;
-    nStopTimeOut     = SECONDS_IN_24H * 1000;
+    nStopTimeOut     = 86400000;
     nPauseTimeOut    = 5000;
     nResumeTimeOut   = 5000;