Bug fixed on MDagM operators for single_GPU environment
Removed specialized and probably bad single node code. Still dont understand the parities of all the sub operations but the code works and agrees with Chroma
Merge branch 'quda-0.7' of github.com:lattice/quda into quda-0.7
added eigcg parameters in check_param.h
forgot to add cuda_ritz_precision parameter.
Fixed reliable update condition bug in GCR.
removed cuda_prec_ritz check from checkInvertParam
Fixed bug with comm_addreduce_array for MPI backend.
Merge branch 'quda-0.7' of https://github.com/lattice/quda into quda-0.7
corrected a typo in comm_mpi.cpp
Added missing comm reduction for CPU heavy quark norm.
fixed bug affected tm dslash
Fixed device memory free when resizing the device buffer.
Merge branch 'quda-0.7' of https://github.com/lattice/quda into quda-0.7
Merge remote branch 'origin/quda-0.7' into quda-0.7_dslash_bug

Conflicts:
	lib/lattice_field.cpp
getFatLinkPadding in the milc_interface is now compiled even when staggered fermions are not used
Added resetComms static member variable to lattice field to
ensure that pinned buffer pointers are reset after resizeBufferPinned is
called. Still getting a segmentation fault, however.