Domain wall fermions now invert ; have the basis set up for

Tanh/Zolo * (Cayley/PartFrac/ContFrac) * (Mobius/Shamir/Wilson)
Approx        Representation               Kernel.

All are done with space-time taking part in checkerboarding, Ls uncheckerboarded

Have only so far tested the Domain Wall limit of mobius, and at that only checked
that it
i)  Inverts
ii) 5dim DW == Ls copies of 4dim D2
iii) MeeInv Mee == 1
iv) Meo+Mee+Moe+Moo == M unprec.
v) MpcDagMpc is hermitan
vi) Mdag is the adjoint of M between stochastic vectors.

That said, the RB schur solve, RB MpcDagMpc solve, Unprec solve
all converge and the true residual becomes small; so pretty good tests.

lib/qcd/QCD.h

@@ -307,8 +307,10 @@ namespace QCD {
 }   //namespace QCD
 } // Grid
 
+#include <qcd/SpaceTimeGrid.h>
 #include <qcd/Dirac.h>
 #include <qcd/TwoSpinor.h>
+#include <qcd/LinalgUtils.h>
 #include <qcd/action/Actions.h>
 
 #endif