hdf5

Merge pull request #449 in HDFFV/hdf5 from ~LRKNOX/hdf5_lrk:develop to develop

* commit '7bd516f2ead21e8470cc25c0b664ad6b56c723a0':
  Our best effort to build dynamic plugin tests and not install them with "make install".  It seems the install-exec-hook doesn't remove the last to be installed.
  Add targets for plugin test libraries to avoid linking to external libs.