make own compilation unit for panasonic decoders

rtengine/dcraw.h

@@ -411,18 +411,6 @@ private:
    unsigned encoding;
 };
 
-class pana_cs6_page_decoder
-{
-  unsigned int pixelbuffer[14], lastoffset, maxoffset;
-  unsigned char current, *buffer;
-  public:
-  pana_cs6_page_decoder(unsigned char *_buffer, unsigned int bsize)
-      : lastoffset(0), maxoffset(bsize), current(0), buffer(_buffer)
-  {
-  }
-  void read_page(); // will throw IO error if not enough space in buffer
-  unsigned int nextpixel() { return current < 14 ? pixelbuffer[current++] : 0; }
-};
 void panasonicC6_load_raw();
 void panasonicC7_load_raw();