KSPFGMRESModifyPCSLES

modifies the attributes of the GMRES preconditioner. It serves as an example (not as something useful!)

int KSPFGMRESModifyPCSLES(KSP ksp,int total_its,int loc_its,PetscReal res_norm,void *dummy)

	ksp	- the ksp context being used.
	total_its	- the total number of FGMRES iterations that have occurred.
	loc_its	- the number of FGMRES iterations since last restart.
	res_norm	- the current residual norm.
	dummy	- context, not used here

Contributed by Allison Baker

This could be used as a template!