Simplification of OSX cmake.
Avoid the necessity of Trilinos' Komplex package when complex calculations are not needed.
Make PETSc cmake find work also for a typically configured Macports version of PETSc
Fixes in PETSc
Fixing a bug in LinearFilter
Small fix.
Upgrade of PETSc wrapper interface to new version of PETSc.
Removing undefined functions from PETSc wrapper.
Fixing complex/real type handling in PETSc wrapper.
Merge pull request #116 from mhanus/master

PETSc et al.