Green channel equilibration algorithm, for cameras such as Olympus, Panasonic, Canon 7D, etc that have different properties for the G1/G2 channels of the Bayer color filter array. In addition, minor changes to line denoise and CA_correct.

rtgui/preferences.h

@@ -79,6 +79,8 @@ class Preferences : public Gtk::Dialog {
 	Gtk::CheckButton* HotDeadPixFilt;//Emil's hot/dead pixel filter
 	Gtk::Label* LineDenoiseLabel;//Emil's line denoise
 	Gtk::SpinButton*  LineDenoise;
+	Gtk::Label* GreenEquilLabel;//Emil's Green equilibration
+	Gtk::SpinButton*  GreenEquil;
 
     Gtk::FileChooserButton* iccDir;
     Gtk::FileChooserButton* monProfile;