hdf5

[svn-r17525] Description:
	Add backward compatibility test to make certain that the 1.6 library
handles encountering a file with a fixed array chunk index gracefully.

	Also, remove the (generated) testh5ls.sh at 'make distclean'

Tested on:
	FreeBSD/32 6.3 (duty) w/production
	(too minor to require h5committest)