fix all warnings and add -Werror

src/core/main.cpp

@@ -65,7 +65,6 @@
 #include "mmp.h"
 #include "song.h"
 
-#warning TODO: move somewhere else
 static inline QString baseName( const QString & _file )
 {
 	return( QFileInfo( _file ).absolutePath() + "/" +

src/gui/LmmsStyle.cpp

@@ -195,26 +195,6 @@ void drawPath( QPainter *p, const QPainterPath &path,
 }
 
 
-
-static QString getCacheKey( const QString & _key,
-		const QStyleOption * _option, const QSize & _size )
-{
-	QString tmp;
-	const QStyleOptionComplex *complexOption =
-			qstyleoption_cast<const QStyleOptionComplex *> ( _option );
-	tmp.sprintf( "%s,%d,%d,%d,%lld,%dx%d",
-			_key.toLatin1().constData(),
-			uint( _option->state ),
-			complexOption ? uint( complexOption->activeSubControls ) : uint( 0 ),
-			_option->direction,
-			_option->palette.cacheKey(),
-			_size.width(),
-			_size.height() );
-	return tmp;
-}
-
-
-
 LmmsStyle::LmmsStyle() :
 	QPlastiqueStyle()
 {