Move from Eigen2 to Eigen3
Merge branch 'eigen3' into hdevalence-gsoc2013

Conflicts:
	CMakeLists.txt
Add some extra lines required to make things work properly.
Merge branch 'eigen3' into hdevalence-gsoc2013
Add some extra lines required to make things work properly.
Merge branch 'eigen3' into hdevalence-gsoc2013
Use double precision, as discussed on KStars-devel