Implemented a feature which allows for an additional field for having a text message

with a motor axis. To this purpose a new derived class SINQAxis and SINQController were
added which other drivers using this feature can derive from. The proof of concept and
test platform is the EL734 driver.

sinqEPICSApp/Db/motorMessage.db

@@ -0,0 +1,9 @@
+
+# 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")
+}