Changelog. A lot less detailed than usual, at least for past
history. 

2008/02/08: Merged changes from intermesh branch: we now have an
	    inter_desc_type object. Cleaned up data allocation and
	    variable initialization in multilevel prec application.

2008/01/10: Merged various fixes for: prologues, unused variables,
	    interface details.	
2007/12/21: Merge version with prologues and internal docs.
	
2007/11/15: Created pargen example.	

2007/11/14: Fix INTENT(IN) on X vector in preconditioner routines.

2007/10/19: Merged in ILU(P,T). To be tested extensively.

2007/10/17: Merged ILU(K) into trunk.

2007/10/16: Fixed ILU(K), it now performs satisfactorily. Also updated
	    ILU(0) to be more legible. 
	
2007/10/11: First working version of ILU(K). Still slow, there should
	    be room for improvement. 
	
2007/10/09: Added benchmark code.

2007/10/09: Added MILU_N_. Beware: values for UMF_ etc. have been
	    shifted. 

2007/10/02: To do: decide whether to name MLD_KRYLOV_MOD or
	    PSB_KRYLOV_MOD. 

2007/10/01: Start of this changelog. MLD2P4 now has a different
	    structure, to enable a build not embedded in PSBLAS.