Only print combined estimator if number of active cycles is greater than 3.
Added path_output variable.
Added <output_path> option in settings.xml.
Update HDF5 version in Makefile.
Fixed voxel.py typo in usersguide
Fix spacing in processing.rst in documentation.
Propogated loafs_header dependency
Changed neutron balance leakage debug statement to divide by nrealizations
Added diffusion flux output and source location dumping
Exposed cmfd matrix indexing function for cmfd group fluxes
Revamped eigenvalue.F90 data outputting for comparison to loafs
Removed reweighting schemes that attempted to acheive mc consistency
Merge branch 'master' of github.com:mit-crpg/openmc
Added use globals to cmfd output for path_output variable