PICout improvement:

* renamed private members for more clear code
 * registerExternalBufferID() method to obtain unique ID for withExternalBuffer()
 * PICoutManipulators::PICoutStdStream enum for select stream (stdout or stderr)
 * Constructors now accept optional stream
 * piCerr and piCerrObj macros

PIDir::temporary() moved to "mkdtemp"

PILog:
 * now 4 levels
 * you can set max level
 * Error writes to piCerr

utils/system_daemon/main.cpp

@@ -420,7 +420,7 @@ int main(int argc, char * argv[]) {
 	MainMenu * menu = new MainMenu(*daemon);
 	if (sapp) CONNECTU(sapp, messageReceived, menu, messageFromApp);
 	if (cli.hasArgument("silent")) {
-		PICout::setOutputDevices(PICout::StdOut);
+		PICout::setOutputDevices(PICout::Console);
 		PIKbdListener ls;
 		ls.enableExitCapture(PIKbdListener::F10);
 		ls.start();