hdf5_ep

[svn-r17020] Description:
	Bring revision 17019 from trunk to 1.8 branch:

	Break out the configure check for fseeko & ftello from lseek64/fseek64/
ftruncate64, since the check for the latter routines is not a valid check for
the former routines.

Tested on:
	(h5committested on trunk)