Improve Console window output.

-> Log Pre- and Post-Launch command happenings
-> Enable the java part to specify the level

TODO: fix logging with mc 1.7's log4j logging infrastructure

Signed-off-by: Orochimarufan <orochimarufan.x3@gmail.com>

MultiMC.cpp

@@ -379,6 +379,7 @@ void MultiMC::initGlobalSettings()
 	// Console
 	m_settings->registerSetting("ShowConsole", true);
 	m_settings->registerSetting("AutoCloseConsole", true);
+	m_settings->registerSetting("LogPrePostOutput", true);
 
 	// Console Colors
 	//	m_settings->registerSetting("SysMessageColor", QColor(Qt::blue));