Extrapolation schemes

Modules
module	mod_extrapolation_neumann_schemes
	Extrapolation Neumann Schemes Concretly, those schemes are pointers to FD schemes, see the init procedure.
module	mod_extrapolation_scheme_o1
	Extrapolation Schemes for at order 1.
module	mod_extrapolation_scheme_o2
	Extrapolation Schemes for at order 2.
module	mod_extrapolation_scheme_o3
	Extrapolation Schemes for at order 3.
module	mod_extrapolation_scheme_o4
	Extrapolation Schemes for at order 4.

Detailed Description