Implemented changing speed on EL734

Added a test IOCs for EL734

testel734/db/basic_asyn_motor.db

@@ -0,0 +1,23 @@
+record(motor,"$(P)$(M)")
+{
+	field(DESC,"$(DESC)")
+	field(DTYP,"$(DTYP)")
+	field(DIR,"$(DIR)")
+	field(VELO,"$(VELO)")
+	field(VBAS,"$(VBAS)")
+	field(ACCL,"$(ACCL)")
+	field(BDST,"$(BDST)")
+	field(BVEL,"$(BVEL)")
+	field(BACC,"$(BACC)")
+	field(OUT,"@asyn($(PORT),$(ADDR))")
+	field(MRES,"$(MRES)")
+	field(PREC,"$(PREC)")
+	field(EGU,"$(EGU)")
+	field(DHLM,"$(DHLM)")
+	field(DLLM,"$(DLLM)")
+	field(INIT,"$(INIT)")
+	field(TWV,"1")
+        field(RDBD,"$(RDBD)")
+        field(RTRY,"0")
+}
+