New feature: log into stdout/stderr

 * Moved Logging system control code from LauncherConsole to
   LauncFrame.main().
 * Added log/OutputOverride.java: moved code from LauncherConsole.java
 * Added log/StdfOutLogger: Provides basic stdout/stderr logging
LaunchFrame.java: Check if Console is needed

 * Create and show console only if configured
 * Add console as an log listener only if configured
Merge pull request #714 from jikuja/feature_log_to_stdout_v2

Logging fixes