hdf5_ep

[svn-r2704] Purpose:
	Bug Fix
Description:
	Sed was complaining about "filename expected" when trying to
	generate the .in files. The problem stemmed from the script sed
	was generating in the conftest.s1 file. It needed the DEPEND
	filename which wasn't being set.
Solution:
	Fixed so that we check if DEPEND is zero before trying to set if
	(if not using a GNU make program) instead of testing if DEPEND
	has a value in it...I copied this incorrectly from the main
	library's configure.in file...my bad.
Platforms tested:
	T3E