Add major error class for r-tree

Author: mattjala

src/H5RTmodule.h

@@ -23,7 +23,7 @@
  */
 #define H5RT_MODULE
 // TODO
-#define H5_MY_PKG_ERR  H5E_BTREE
+#define H5_MY_PKG_ERR  H5E_RTREE
 #define H5_MY_PKG_INIT NO
 
 #endif /* H5RTmodule_H */

src/H5RTprivate.h

@@ -23,7 +23,7 @@ typedef struct H5RT_t H5RT_t;
 
 /* Struct representing a leaf in the r-tree */
 typedef struct H5RT_leaf_t {
-    void               *record;
+    uintptr_t           record;
     hsize_t             min[H5S_MAX_RANK];
     hsize_t             max[H5S_MAX_RANK];
     hsize_t             mid[H5S_MAX_RANK];

src/H5err.txt

@@ -79,6 +79,7 @@ MAJOR, H5E_CONTEXT, API Context
 MAJOR, H5E_MAP, Map
 MAJOR, H5E_EVENTSET, Event Set
 MAJOR, H5E_THREADSAFE, Threadsafety
+MAJOR, H5E_RTREE, R-Tree spatial index
 MAJOR, H5E_NONE_MAJOR, No error
 
 # Sections (for grouping minor errors)