Merge branch 'dev' into perspective

Resolve minor conflict in ImProcFunctions::transformGeneral and add new
arguments for use of ImProcFunctions::needsTransform in
PerspectiveCorrection::autocompute.

rtengine/procparams.h

@@ -837,6 +837,7 @@ struct CoarseTransformParams {
   * Common transformation parameters
   */
 struct CommonTransformParams {
+    Glib::ustring method;
     bool autofill;
 
     CommonTransformParams();