remove reference to deleted sub-folder
Snapshot version 1.9 release 200
The return type of H5A_create was changed from hid_t to H5A_t *
but the test was not changed (still doing H5A_create(...) < 0).
Fixed the error by changing to compare against NULL.

Tested: ADA AIX machine where the old code was flagged as an error by the AIX compiler.
Snapshot version 1.9 release 201
HDFFV-8953: remove svn url references
Remove obsolete comment and add test to suite.
Add bitfield and opague datatype file for tests.

Tested: local linux
Testfiles for h5dump bitfields and opaques
use MPI_File_get_size() instead of stat when retrieving the file size for the MPIO driver.
Removed spurious casts in a few HDfree() statements.

Discovered when I temporarily #defined HDfree() to a more complicated
function while investigating something. 

Tested on a local linux VM. This is a very minor change.
Removed the -Wunsuffixed-float-constants warning from the gnu-flags
script. The warnings that this generates cannot easily be resolved in
platform-independent C code since gnu expects the non-standard (gnu)
'D' suffix for double constants.

It's still technically useful for catching float and long double
constants, but should probably be enabled by developers on an
as-needed basis for that purpose so the spurious warnings are
avoided.

Tested on a local linux VM with gcc 4.8.2. This is a very minor change.
Snapshot version 1.9 release 202
Description:
    Revert r25273, 25283 & 25439 (the hyperslab improvement changes).  They
are buggy and it's taking me a long time to correct the problem.  I'll check
in a revised form of the changes when I've got them straightened out.

Tested on:
    Mac OSX 10.10.0 (amazon) w/gcc 4.9.x, C++, FORTRAN
    Linux 2.6.x (jam) w/parallel
Bug fix: HDFFV-8954
Previously, ph5diff may hang in a test in Linux 32 platform(HDFFV-587).
No solution was available and a patch to bypass the test is implemented.

Since the company is changing domain name soon, the patch would not be valid any more.
Tests were done (repeat 100 mpiexec -np 6 ./ph5diff -v h5diff_hyper1.h5 h5diff_hyper2.h5)
and the previous hanging problem did not occur. It is likely the newer versions of
mpich no longer have this problem.  Therefore, it is decide to remove this patch
to make the test script cleaner, if nothing else.

Tested: ran build and test in Jam (linux 32) and the repeat 100 command mentioned above.
All passed.
merge from trunk.