hdf5_ep

[svn-r18348] Description:
	Bring r18346 from trunk to 1.8 branch:

   Bring Coverity fixes back from branch to trunk:

r18336:
Fix coverity issues 275, 276, 277, 323, 432, 433, and 434

r18337:
Fix Coverity issue #106: release free space section node on error

r18338:
Fixed Coverity #94 - In H5P_register, new_class wasn't closed when there's an
error after it's created.

r18339:
Fix Coverity #185 - In test_conv_str_1, BUF wasn't freed when there's an error
in this function.

r18340:
Correct error in r18337 that wasn't releasing indirect fractal heap block
early enough.

r18341:
Close nodes if any failed in the middle of allocating new nodes. Coverity 140
and 141

r18342:
Correct [another] problem w/r18337.

r18343:
Fix coverity items 185, 20, and 21.

r18344:
Fix Coverity 213 - In H5FD_family_close, the double pointer file->memb was
dereferenced without NULL checking 
(We believe).

r18345:
Fix Coverity issue # 210;  removed NULL check after pointer dereferenced in
H5HFdblock.c.   Also assigned NULL to pointer in H5Pint.c to fix segmentation
fault.

Tested on:
	FreeBSD/32 6.3 (duty) w/debug)
	(h5committested on trunk)