Merge pull request #221 in HDFFV/hdf5 from ~BYRN/hdf5_adb:develop to develop
Buildbot tests passed
* commit '69f975f56792acb9c7a4a8109c43081045b0eafe':
hdf5 lib needed for extend_dset link.
Add test lib to extend_dset test link line
Add hl test dir and test dlib
Fix h5test.h include issue
