[Kst] extragear/graphics/kst/kst/datasources

[Ted Kisner]

SVN commit 457841 by tskisner:

New healpix datasource converted from hpic data source.  All functionality not found in chealpix is contained in the datasource- so we can use either chealpix or hpic.

 A             healpix (directory)  
 A             healpix/Makefile.am  
 A             healpix/healpix.cpp   [License: GPL (v2+)]
 A             healpix/healpix_source.h   [License: GPL (v2+)]
 A             healpix/healpix_tools.cpp   [License: no copyright]
 A             healpix/healpix_tools.h   [License: GPL (v2+)]
 A             healpix/kstdata_healpix.desktop