new features: data reduction, angle scan panel

- new data reduction interface for more efficient multi-peak fitting.
  the new interface breaks compatibility with pre-2.0 data reduction
  functions. user-defined functions must be adapted to the new
  interface.
- new angle scan processing panel for interactive data analysis.

pearl/pearl-menu.ipf

@@ -1,6 +1,6 @@
 #pragma rtGlobals=1		// Use modern global access method.
 #pragma ModuleName = PearlMenu
-#pragma version = 1.01
+#pragma version = 1.02
 
 // main menu for PEARL data acquisition and analysis packages
 
@@ -54,6 +54,11 @@ menu "PEARL"
 		help = {"Gizmo display of 3D data", "Requires ARPES package"}
 	end
 	
+	submenu "Process"
+		PearlMenuEnableFunc("asp_show_panel") + "XPD scans", /Q, asp_show_panel()
+		help = {"Data processing of two-pi angle scans", "Requires ARPES package"}
+	end
+	
 	submenu "Services"
 		PearlMenuEnableFunc("pearl_elog") + "Open ELOG Panel", /Q, pearl_elog("")
 		help = {"Open an ELOG panel to send entries to an ELOG logbook"}