hdf5

Merge pull request #116 in HDFFV/hdf5 from ~LRKNOX/hdf5_lrk:hdf5_1_8_18 to hdf5_1_8_18

* commit 'b9be12102550f678b4e0cdb179ca560966bbf65c':
  Update Windows tested platforms information.
  Update shared object file numbers according to changes in v1.8.18 release. Update autotools and libtool versions. Run bin/reconfigure.
  Updated RELEASE.txt for C++ API and Packet Table APIs for 1.8.18.
  Updated "Platforms supported" section.
  Clone directly into "current".
  Translate svn co to git clone command. Remove unnecessary references to svn.