[processing] improve SAGA version check. Fix getCopy() method

Author: alexbruy

python/plugins/processing/algs/saga/SagaAlgorithm.py

@@ -75,7 +75,7 @@ def __init__(self, descriptionfile):
         self._icon = None
 
     def getCopy(self):
-        newone = SagaAlgorithm212(self.descriptionFile)
+        newone = SagaAlgorithm(self.descriptionFile)
         newone.provider = self.provider
         return newone
 

python/plugins/processing/algs/saga/SagaAlgorithmProvider.py

@@ -82,7 +82,7 @@ def _loadAlgorithms(self):
                                    self.tr('Problem with SAGA installation: SAGA was not found or is not correctly installed'))
             return
 
-        if version not in ['2.3.0', '2.3.1']:
+        if not version.startswith('2.3.'):
             ProcessingLog.addToLog(ProcessingLog.LOG_ERROR,
                                    self.tr('Problem with SAGA installation: unsupported SAGA version found.'))
             return