First working version of the MasterMACS EPICS driver

Also added some test code

testmmac/db/motorMessage.db

@@ -0,0 +1,18 @@
+
+# The message text
+record(waveform, "$(P)$(M)-MsgTxt") {
+    field(DTYP, "asynOctetRead")
+    field(INP, "@asyn($(PORT),$(N),1) MOTOR_MESSAGE_TEXT")
+    field(FTVL, "CHAR")
+    field(NELM, "80")
+    field(SCAN, "I/O Intr")
+}
+
+record(ao,"$(P)m$(N)-Resolution"){
+	field(DESC,"m$(N) Resolution")
+        field(DOL,"$(P)m$(N).MRES CP MS")
+	field(OMSL,"closed_loop")
+	field(DTYP,"asynFloat64")
+	field(OUT,"@asyn($(PORT),$(N))MOTOR_RESOLUTION")
+	field(PREC,"3")
+}