new solvers by Phillippe and Xinding
default_input_values adapted to Xindings version
D_psi adapted to Xindings version
global.h adapted to Xindings version
invert.c adapted to Xindings version
invert_eo.c and invert_eo.h adapted to Xindings version
bicg_complex included from Xindings version
Msap adapted to Xindings version
solver.h adapted to Xindings version
dfl_projector.c adapted to Xindings version
gcr4complex.c adapted to Xindings version
gcr.c adapted to Xindings version
generate_dfl_subspace.c adapted to Xindings version
bicg_complex included from Xindings version
read_input.l included from Xindings version
tm_operators included from Xindings version
assign_mul_add_mul included from Xindings version
assign_mul_add_mul included from Xindings version
bug in hopping_dbl.c fixed
restored cgmms call as it was in version forked from