vchoi_fork

Merge pull request #2436 in HDFFV/hdf5 from ~BYRN/hdf5_adb:hdf5_1_8 to hdf5_1_8

* commit 'c2af6a8f8656482bb2f96263eb54db48c1801947':
  Remove system command from valgrind reports
  Fix h5ls attrreg
  Fix gif tool and h5dump
  Merge changes from other branches