Add an option in CMakeLists.txt for downloading boost
Merge branch 'master' into trunk
Merge branch 'master' of https://github.com/wenqing/ogs into trunk
Merge branch 'trunk' of ../ogs6 into trunk
1st PETSc
More changes in linear solver interface for PETSc
Add PETSc package test: 1
Add findPETSC
Add PETSc in MathLin
Finite one PETSc interface for solver and assembly
Remove screen printing for the MPI debugging