Merge with e190c52ab7861c68762aaa552f3dc0f59fe2e225 from default

This revision compiles and runs on Win7x64- but further evaluation is necessary.
There may be an issue with cmake step -After cmake I had to copy rtgui/version.h & config.h into out of source build /rtgui folder.
Additional notes:
- ImProcFunctions::hsv2rgb01   -> this likely need to be added to color.h & color.cc
- Use of array2D should be verified in NR code
- compilation warning for rtengine::RawImageSource::isWBProviderReady()

rtgui/flatfield.h

@@ -19,6 +19,7 @@
 #ifndef _FLATFIELD_H_
 #define _FLATFIELD_H_
 
+#include <auto_ptr.h>
 #include <gtkmm.h>
 #include "adjuster.h"
 #include "toolpanel.h"
@@ -36,6 +37,7 @@ class FlatField : public Gtk::VBox, public AdjusterListener, public FoldableTool
 protected:
 
 	MyFileChooserButton *flatFieldFile;
+	std::auto_ptr<FileChooserLastFolderPersister> flatFieldFilePersister;
 	Gtk::Label *ffLabel;
 	Gtk::Label *ffInfo;
 	Gtk::Button *flatFieldFileReset;