Add variables for Bilby beamcenter position and selected beamstop.

site_ansto/instrument/bilby/config/parameters/parameters.tcl

@@ -0,0 +1,10 @@
+foreach {var lname type priv units klass} {
+  BeamCenterX      BeamCenterX        float user     mm   parameter
+  BeamCenterZ      BeamCenterZ        float user     mm   parameter
+  BeamStop         BeamStop           int   user     none parameter
+} {
+  ::utility::mkVar $var $type $priv $lname true $klass true true
+  if {$units != "none"} {
+    sicslist setatt $var units $units
+  }
+}