hdf5_chunking_query_bmr

[svn-r19274] Description:
	Bring r19272 & 19273 from trunk to 1.8 branch:

	Close out various resource leaks and usages of uninitialized memory that
were flagged by valgrind.  [There's still some more valgrind warnings, but
it's better now... :-/ ]

   Also clean up warnings and code formatting.

Tested on:
        FreeBSD/32 6.3 (duty) in debug mode
        FreeBSD/64 6.3 (liberty) w/C++ & FORTRAN, in debug mode
        Linux/64-ia64 2.6 (cobalt) w/Intel compilers, w/C++ & FORTRAN,
                in production mode
        Mac OS X/32 10.6.4 (amazon) in debug mode
        Mac OS X/32 10.6.4 (amazon) w/C++ & FORTRAN, w/threadsafe,
                in production mode
        Mac OS X/32 10.6.4 (amazon) w/parallel, in debug mode