BUG: dict.iteritems() not supported in python 3

This is a fix for Python wrapping using Python 3. The for loop on a dictionary has been rewritten in a more generic way (compatible with python 2 and 3).

Modules/Wrappers/SWIG/src/otbApplication.i

@@ -594,7 +594,7 @@ class ApplicationProxy(object):
 			return s
 
 		def SetParameters(self, dict_params):
-			for param_key, param_value in dict_params.iteritems():
+			for param_key, param_value in dict_params.items():
 				self.SetParameterValue(param_key, param_value)
 
 		def SetParameterValue(self, paramKey, value):