Added new callback attributes: buffersize and expiration
Revert "Added new callback attributes: buffersize and expiration"

This reverts commit 362274eb06faf091bcfac4b642a25463faef1c5f.
Merge remote-tracking branch 'upstream/master'
Merge remote-tracking branch 'upstream/master'
Merge remote-tracking branch 'upstream/master'
Fixed HDF5_HL_LIBRARIES workaround
Merge pull request #41 from griffinmilsap/master

Cross platform HDF5 workaround