[svn-r17603] Bug fix:

The ph5diff tests printout incorrectly reporting they are running
h5diff when it actually is running ph5diff.
Fixed.

Tested: Jam (parallel), linew (serial)
No H5committest since it is a shell script and Jam tests both
serial and parallel h5diff for Linux while Linew tests Big
endian platform.

tools/h5diff/testh5diff.sh

@@ -79,8 +79,9 @@ test -d ./testfiles || mkdir ./testfiles
 #   -h   print help page
 while [ $# -gt 0 ]; do
     case "$1" in
-    -p)	# run ph5diff tests
-	H5DIFF_BIN=`pwd`/ph5diff
+    -p)	# reset the tool name and bin to run ph5diff tests
+	H5DIFF=ph5diff               # The tool name
+	H5DIFF_BIN=`pwd`/$H5DIFF
 	pmode=yes
 	shift
 	;;