Integration schemes

Modules
module	type_integ_1d_scheme_gl
	Integration Scheme: 1D Gauss.
module	type_integ_1d_scheme_mp
	Integration Scheme: 1D MidPoint.
module	type_integ_1d_scheme_simpson
	Integration Scheme: 1D Simpson.
module	type_integ_2d_scheme_gl
	Integration Scheme: 1D Gauss.

Detailed Description