The instrinsic cod is now auto generated with Makefile.
Add .ah auto-generted files and matriplex-auto make touch target.
Makefile to generate .ah files needed by the code. Pretty much hand written rules, for now.
Add recursive invocation into Matriplex for matriplex-auto target and related rules/deps. Add distclean target.
Add / document define MPLEX_USE_INTRINSICS that triggers usage of intrinsics on MIC (for supported operations).
Consolidate Multiply functions: include external files for auto-generated code. Use defines to steer usage of intrinsics in supported cases.