[svn-r761] Changes since 19981013

----------------------

./src/H5.c
	Fixed a signed vs. unsigned comparison.

./src/H5D.c
	Setting a fill value of all zeros will cause the fill value to
	be written to the dataset instead of relying on the low-level
	file driver initializing unwritten areas with zero.

./src/H5D.c
./src/H5F.c
./src/H5Fprivate.h
./src/H5G.c
./src/H5Gpkg.h
./src/H5Gprivate.h
./src/H5O.c
./src/H5T.c
	More file mounting stuff.

./src/H5I.c
	Fixed a bug where trying to close an invalid object id caused
	a core dump.  For instance, H5Gclose(-1).

./MANIFEST
./test/Makefile.in
./test/mount.c		[NEW]
	Mounting tests.

./src/H5R.c
	Fixed a couple (herr_t)NULL casts.

1 files changed, 9 insertions, 0 deletions

diff --git a/src/H5Gpkg.h b/src/H5Gpkg.h
index 74573f3..03a2629 100644
--- a/src/H5Gpkg.h
+++ b/src/H5Gpkg.h
@@ -56,6 +56,15 @@ struct H5G_t {
 };
 
 /*
+ * During name lookups (see H5G_namei()) we sometimes want information about
+ * a symbolic link or a mount point.  The normal operation is to follow the
+ * symbolic link or mount point and return information about its target.
+ */
+#define H5G_TARGET_NORMAL	0x0000
+#define H5G_TARGET_SLINK	0x0001
+#define H5G_TARGET_MOUNT	0x0002
+
+/*
  * These operations can be passed down from the H5G_stab layer to the
  * H5G_node layer through the B-tree layer.
  */