Patch from issue 1359: "Munsell correction - Lab adjustements" credits: jdesmis

Bundled new features besid the Lab tool enhancement (by jdesmis) :
   - curve to control skin tones in vibrance tool, credits: jdesmis
   - right click over SHCSelector (below the parametric curve) to reset to default values, credits: Hombre
   - colored bars around curves, credits: Hombre

rtgui/paramsedited.h

@@ -53,14 +53,16 @@ class LCurveParamsEdited {
     public:
         bool brightness;
         bool contrast;
-        bool saturation;
-        bool avoidclip;
-        bool enable_saturationlimiter;
-        bool saturationlimit;
+        bool chromaticity;
+        bool avoidcolorshift;
+        bool rstprotection;
         bool lcurve;
         bool acurve;
         bool bcurve;
         bool bwtoning;
+        bool cccurve;
+        bool chcurve;
+        //bool cbgcurve;
 };
 
 class RGBCurvesParamsEdited {
@@ -118,6 +120,7 @@ class VibranceParamsEdited {
         bool protectskins;
         bool avoidcolorshift;
         bool pastsattog;
+        bool skintonescurve;
 };
 
 /*class ColorBoostParamsEdited {
@@ -126,7 +129,7 @@ class VibranceParamsEdited {
         bool amount;
         bool avoidclip;
         bool enable_saturationlimiter;
-        bool saturationlimit;
+        bool rstprotection;
 };*/
 
 class WBParamsEdited {