Add option for microsecond precision in debug.log

src/utiltime.cpp

@@ -40,6 +40,14 @@ int64_t GetTimeMicros()
             boost::posix_time::ptime(boost::gregorian::date(1970,1,1))).total_microseconds();
 }
 
+/** Return a time useful for the debug log */
+int64_t GetLogTimeMicros()
+{
+    if (nMockTime) return nMockTime*1000000;
+
+    return GetTimeMicros();
+}
+
 void MilliSleep(int64_t n)
 {