set env var CLING_STANDARD_PCH to silence annying cling warning

Control/DataModelTest/DataModelTestDataCommon/scripts/dmtest_condwriter.py

@@ -8,7 +8,8 @@
 
 from __future__ import print_function
 
-import sys
+import sys,os
+os.environ['CLING_STANDARD_PCH'] = 'none' #See bug ROOT-10789
 from PyCool import cool
 from CoolConvUtilities import AtlCoolLib, AtlCoolTool
 

DataQuality/DQUtils/tests/test_coracool.py

@@ -12,6 +12,8 @@ from quick_retrieve import browse_coracool
 
 from time import time
 
+from os import environ
+os.environ['CLING_STANDARD_PCH'] = 'none' #See bug ROOT-10789
 from PyCool import cool
 
 def fetch_lb_timestamps(since, until):

Database/IOVDbMetaDataTools/test/testFillSimParams.py

@@ -13,8 +13,9 @@ __version__ = "$Id: testFillSimParams.py,v 1.1 2008-05-03 08:45:54 schaffer Exp
 __author__  = "RD Schaffer <R.D.Schaffer@cern.ch>"
 
 
-import sys
+import sys,os
 import string
+os.environ['CLING_STANDARD_PCH'] = 'none' #See bug ROOT-10789
 from PyCool import cool,coral
 from IOVDbMetaDataTools import ParameterDbFiller
 

MagneticField/MagFieldServices/share/test_magFieldCondAlg.py

@@ -13,6 +13,8 @@ folder = '/EXT/DCS/MAGNETS/SENSORDATA'
 
 def createDB():
    """Create sqlite file with DCS currents"""
+   import os
+   os.environ['CLING_STANDARD_PCH'] = 'none' #See bug ROOT-10789
    from PyCool import cool
    from CoolConvUtilities import AtlCoolLib, AtlCoolTool