The default version of HDF5 to download is 1.8.12
Fixed a bug in CI string.
Changed type of hdf5.direct keyword in CI to boolean.
Check for presence of DIRECT driver.
MPQC-105: CI code does not compile unless HDF5 version is 1.8 or higher
http://valeev.chem.vt.edu:8080/browse/MPQC-105
Moved CI module into the Module hierarchy.
MPQC-104: document and clean-up CI
http://valeev.chem.vt.edu:8080/browse/MPQC-104
Minor compilation fix.