Moved the function to Save image also into the internal header

wrlib/imgformat.h

@@ -66,5 +66,10 @@ RImage *RLoadJPEG(RContext *context, char *file);
 RImage *RLoadGIF(char *file, int index);
 #endif
 
+/*
+ * Function for Saving in a specific format
+ */
+Bool RSaveXPM(RImage * image, char *filename);
+
 
 #endif

wrlib/save.c

@@ -32,8 +32,8 @@
 #include <time.h>
 
 #include "wraster.h"
+#include "imgformat.h"
 
-extern Bool RSaveXPM(RImage * image, char *filename);
 
 Bool RSaveImage(RImage * image, char *filename, char *format)
 {