sed: s/( void )/(), s/FALSE/false/, s/TRUE/true

Replaced remaining occurences of old constants and superfluous "void"
on empty argument list of functions.
(cherry picked from commit 166701f9f3)

src/core/engine.cpp

@@ -84,7 +84,7 @@ void engine::init( const bool _has_gui )
 
 	s_ladspaManager = new ladspa2LMMS;
 
-	s_projectJournal->setJournalling( TRUE );
+	s_projectJournal->setJournalling( true );
 
 	s_mixer->initDevices();