Merge pull request #84 from mwarusz/master

xdmf output and rotating sphere test
updating bombel tests to handle new code layout
fixing order of indices in mpdata_fct_3d
listing tags in concurr::any
cleanup: removing phc.hpp and test_todo_3d
sync
sync
replacing the pds option with an abs option
Merge remote-tracking branch 'upstream/master'
hint_norhs and ct_params_default_t
sync
fixing nug 2d
Merge remote-tracking branch 'upstream/master'
fixing ct_params_default_
Merge remote-tracking branch 'upstream/master'
adding the abs option in rotating sphere test
cleanups (mostly in solver_common)
forgotten changes in harmosc
merging changes from Ania
renaming toa -> tot