Added custom local Makefiles.

Added custom 'Makefile.local' examples for RIPPLE and Graham.

Makefile.graham

@@ -0,0 +1,11 @@
+# to use, copy this file to 'Makefile.local'
+
+MACROS = -DGRAHAM -DNTHREADS=12800 -DNBLOCKS=20
+CUDA_ARCH = sm_60
+
+GMP ?=
+NTL ?= <fill this in>
+CUDA ?=
+LIBEVENT ?= <fill this in>
+MPI ?=
+CXX ?= g++

Makefile.ripple

@@ -0,0 +1,4 @@
+# to use, copy this file to 'Makefile.local'
+
+MACROS = -DRIPPLE -DNTHREADS=16384 -DNBLOCKS=32
+CUDA_ARCH = sm_30