fixed output cast of solvelinear system
 intermediate commit
intermediate commit
fixed addknowns
intermediate commit
deleted white spaces
deleted white spaces (2)
deleted white spaces (3)
before dan's review
commit after dans review
after dans review (2)
Merge branch 'master' of https://github.com/SCIInstitute/SCIRun into BrainStimulatorLunch
Merge pull request #637 from moritzdannhauer/BrainStimulatorLunch

Bug_fixes
Merge branch 'master' into gui_K