[svn-r30189] Description:

Clean up more warnings: drop the warning count from ~1310 down to ~940,
with only 31 types of warnings in 148 files (down from 38 types in 167 files).

Tested on:
    MacOSX/64 10.11.5 (amazon) w/serial & parallel
    (h5committest forthcoming)

hl/test/test_dset_append.c

@@ -16,7 +16,6 @@
 #include <stdlib.h>
 #include <string.h>
 #include "h5hltest.h"
-#include "H5srcdir.h"
 #include "H5DOpublic.h"
 #include <math.h>