working version of solve_Ahat_p_fhat_PETSc_Schur
added print_convergence_progress_schur to use in solve_Ahat_p_fhat_PETSc_Schur
minor fixes and cleanup of print_convergence_progress_schur
added the definition of the constant CPPR, set to 1, for caps_per_proc_removal
replaced all occurences of the caps_per_proc iteration variable by CPPR
replaced all occurences of the caps_per_proc iteration variable by CPPR in Anisotropic_viscosity.c
replaced all occurences of the caps_per_proc iteration variable by CPPR in BC_util.c