Win32: added missing symbol exports

Some new classes lacked the EXPORT declaration so they were not
accessible by plugins. Fixed this.

include/Cpu.h

@@ -26,6 +26,7 @@
 #define _CPU_H
 
 #include "lmms_basics.h"
+#include "export.h"
 
 #ifdef LMMS_HAVE_STDBOOL_H
 #include <stdbool.h>
@@ -41,8 +42,8 @@ void init();
 void * memAlloc( int _bytes );
 void memFree( void * _buf );
 
-sampleFrameA * allocFrames( int _frames );
-void freeFrames( sampleFrameA * _buf );
+sampleFrameA * EXPORT allocFrames( int _frames );
+void EXPORT freeFrames( sampleFrameA * _buf );
 
 
 // all functions assume data to be 16 byte  and size to be
@@ -83,7 +84,7 @@ extern BufMixFunc bufMix;
 extern BufMixLRCoeffFunc bufMixLRCoeff;
 extern UnalignedBufMixLRCoeffFunc unalignedBufMixLRCoeff;
 extern BufWetDryMixFunc bufWetDryMix;
-extern BufWetDryMixSplittedFunc bufWetDryMixSplitted;
+extern EXPORT BufWetDryMixSplittedFunc bufWetDryMixSplitted;
 extern ConvertToS16Func convertToS16;
 
 #ifdef __cplusplus

include/LocalResourceProvider.h

@@ -32,7 +32,7 @@
 #include "ResourceItem.h"
 
 
-class LocalResourceProvider : public ResourceProvider
+class EXPORT LocalResourceProvider : public ResourceProvider
 {
 	Q_OBJECT
 public:

include/ResourceDB.h

@@ -34,7 +34,7 @@
 #include "ResourceItem.h"
 
 
-class ResourceDB : public QObject
+class EXPORT ResourceDB : public QObject
 {
 	Q_OBJECT
 public:

include/ResourceItem.h

@@ -30,11 +30,12 @@
 #include <QtCore/QHash>
 #include <QtCore/QList>
 
+#include "export.h"
 #include "ResourceProvider.h"
 #include "TreeRelation.h"
 
 
-class ResourceItem
+class EXPORT ResourceItem
 {
 public:
 	typedef TreeRelation<ResourceItem> Relation;