added compiled quat_distance to clustering
minor merge of output changes and enhancements to clustering

Merge branch 'refactor' of https://github.com/joelvbernier/hexrd into refactor
some substantial fixes, added function to xrdutil

in symmetry: made qsym output of quatOfLaueGroup a C-contiguous array

in transforms: finally fixed validateAngleRanges...  for good I hope

in xrdutil: added ome-eta map simulator

in paintGrid_cmd: fixed a typo, added load option for eta-ome maps
* fixed eta ranges in paintGrid

* fixed load of stored eta-ome maps in paintGrid_cmd

* updated the default cfg (example)
fixed eta/ome range spec for run_paintGrid
updates to dfault.cfg and pg oi/o options
Merge pull request #30 from joelvbernier/refactor

Refactor