Improve batch mode with Locallab

Batch mode is now correctly managed by Locallab. It works only if the
pictures have the same control spot number with coherent id

Other improvements:
- If there is no control spot, all Locallab tools are now disabled

rtgui/thumbnail.cc

@@ -422,6 +422,7 @@ void Thumbnail::setProcParams (const ProcParams& pp, ParamsEdited* pe, int whoCh
 {
     const bool needsReprocessing =
            pparams.toneCurve != pp.toneCurve
+        || pparams.locallab != pp.locallab
         || pparams.labCurve != pp.labCurve
         || pparams.localContrast != pp.localContrast
         || pparams.rgbCurves != pp.rgbCurves
@@ -451,9 +452,12 @@ void Thumbnail::setProcParams (const ProcParams& pp, ParamsEdited* pe, int whoCh
         || pparams.softlight != pp.softlight;
 
     {
+        printf("setProcParams: %d\n", needsReprocessing);
+
         MyMutex::MyLock lock(mutex);
 
         if (pparams != pp) {
+            printf("recentlySaved\n");
             cfs.recentlySaved = false;
         } else if (pparamsValid && !updateCacheNow) {
             // nothing to do
@@ -466,8 +470,10 @@ void Thumbnail::setProcParams (const ProcParams& pp, ParamsEdited* pe, int whoCh
         const int inTrash = getStage();
 
         if (pe) {
+            printf("size: %d %d %d\n", (int)pe->locallab.spots.size(), pe->locallab.nbspot, pe->locallab.selspot);
             pe->combine(pparams, pp, true);
         } else {
+            printf("size: %d\n", (int)pp.locallab.spots.size());
             pparams = pp;
         }