moved include of paralution_precondition.h before the ifdef DEAL_II_WITH_PARALUTION similare to the setup in paralution_solver.cc since DEAL_II_WITH_PARALUTION is set there
added instantiation of SolverCG::solve assuming this is the right place for that.
removes all preconditioners and added all solvers to instantiation
section
added step-60 with paralution example
added CMakeLists.txt to step-60
removed stray 6 after copy CMakeLists.txt from step-6
Merge pull request #1 from thomasgeenen/paralution_precondition

Paralution precondition