caffeine insomnia for win32

Config.cpp

@@ -125,6 +125,7 @@ namespace config {
       ("bandwidth", value<char>()->default_value('-'), "Bandwidth limiting: L - 32kbps, O - 256Kbps, P - unlimited")
 #ifdef _WIN32
       ("svcctl",    value<std::string>()->default_value(""),     "Windows service management ('install' or 'remove')")
+      ("insomnia", value<bool>()->zero_tokens()->default_value(false), "Prevent system from sleeping")
 #endif
       ;
 

DaemonWin32.cpp

@@ -76,6 +76,9 @@ namespace i2p
 				SetStdHandle(STD_OUTPUT_HANDLE, INVALID_HANDLE_VALUE);
 				SetStdHandle(STD_ERROR_HANDLE, INVALID_HANDLE_VALUE);
 			}
+			bool insomnia; i2p::config::GetOption("insomnia", insomnia);
+			if (insomnia)
+				SetThreadExecutionState(ES_CONTINUOUS | ES_SYSTEM_REQUIRED);
 			return ret;
 		}