hdf5_ep

[svn-r19100] Description:
	Bring r19099 from trunk to 1.8 branch:

	Fix const pointer issues for projection construction routine and also
bump time before alarm kicks in to terminate a test from 20 minutes to 30
minutes, to give the PGI compiler tests w/debugging enabled a chance to finish.

Tested on:
	Mac OS X/32 10.6.4 (amazon) w/debug
	Linux/32 2.6.18 (jam) w/PGI & debug