[svn-r17886] Description:

Bring r17885 from trunk to 1.8 branch:

	Convert 'huge' fractal heap object management code to use refactored
v2 B-tree routines.

	Also, switch internal representation of 'sizeof_addr' and 'sizeof_size'
in files to be uint8_t's instead of size_t's, since they are stored in single
bytes in the file format.

	Various other minor compiler warning cleanups and error call tweaks.

Tested on:
       FreeBSD/32 6.3 (duty) in debug mode
	(h5committested on trunk

src/H5Fpkg.h

@@ -197,8 +197,8 @@ typedef struct H5F_file_t {
     H5F_mtab_t	mtab;		/* File mount table                     */
 
     /* Cached values from FCPL/superblock */
-    size_t	sizeof_addr;	/* Size of addresses in file            */
-    size_t	sizeof_size;	/* Size of offsets in file              */
+    uint8_t	sizeof_addr;	/* Size of addresses in file            */
+    uint8_t	sizeof_size;	/* Size of offsets in file              */
     haddr_t	sohm_addr;	/* Relative address of shared object header message table */
     unsigned	sohm_vers;	/* Version of shared message table on disk */
     unsigned	sohm_nindexes;	/* Number of shared messages indexes in the table */