Clean up macros a bit (#6444)

* Prefix `STRINGIFY` and `STR` macros with `LMMS_`

* Fix include guard macro names

* Remove unused macros

src/gui/instrument/InstrumentMidiIOView.cpp

@@ -144,8 +144,6 @@ InstrumentMidiIOView::InstrumentMidiIOView( QWidget* parent ) :
 		midiOutputLayout->insertWidget( 0, m_wpBtn );
 	}
 
-#define PROVIDE_CUSTOM_BASE_VELOCITY_UI
-#ifdef PROVIDE_CUSTOM_BASE_VELOCITY_UI
 	GroupBox* baseVelocityGroupBox = new GroupBox( tr( "CUSTOM BASE VELOCITY" ) );
 	layout->addWidget( baseVelocityGroupBox );
 
@@ -166,7 +164,6 @@ InstrumentMidiIOView::InstrumentMidiIOView( QWidget* parent ) :
 
 	connect( baseVelocityGroupBox->ledButton(), SIGNAL( toggled( bool ) ),
 			m_baseVelocitySpinBox, SLOT( setEnabled( bool ) ) );
-#endif
 
 	layout->addStretch();
 }
@@ -195,9 +192,7 @@ void InstrumentMidiIOView::modelChanged()
 	m_fixedOutputNoteSpinBox->setModel( &mp->m_fixedOutputNoteModel );
 	m_outputProgramSpinBox->setModel( &mp->m_outputProgramModel );
 
-#ifdef PROVIDE_CUSTOM_BASE_VELOCITY_UI
 	m_baseVelocitySpinBox->setModel( &mp->m_baseVelocityModel );
-#endif
 
 	if( m_rpBtn )
 	{

src/lmmsconfig.h.in

@@ -53,25 +53,3 @@
 #cmakedefine LMMS_HAVE_STRING_H
 #cmakedefine LMMS_HAVE_PROCESS_H
 #cmakedefine LMMS_HAVE_LOCALE_H
-
-/* defines for libsamplerate */
-
-
-/* Target processor clips on negative float to int conversion. */
-#cmakedefine CPU_CLIPS_NEGATIVE 1
-#ifndef CPU_CLIPS_NEGATIVE
-#define CPU_CLIPS_NEGATIVE 0
-#endif
-
-/* Target processor clips on positive float to int conversion. */
-#cmakedefine CPU_CLIPS_POSITIVE 1
-#ifndef CPU_CLIPS_POSITIVE
-#define CPU_CLIPS_POSITIVE 0
-#endif
-
-/* Define if you have C99's lrint function. */
-#cmakedefine HAVE_LRINT 1
-
-/* Define if you have C99's lrintf function. */
-#cmakedefine HAVE_LRINTF 1
-