Squish: Using native directory separators on Windows

Change-Id: I8ecf6a8798526b9d9dd0909b9c7e4f61d00d530e
Reviewed-on: http://codereview.qt-project.org/5552
Reviewed-by: Qt Sanity Bot <qt_sanity_bot@ovi.com>
Reviewed-by: Christian Stenger <christian.stenger@nokia.com>

tests/system/shared/qtcreator.py

@@ -50,9 +50,9 @@ def __removeTmpSettingsDir__():
     deleteDirIfExists(os.path.dirname(tmpSettingsDir))
 
 if platform.system() in ('Windows', 'Microsoft'):
-    sdkPath = "C:/QtSDK"
+    sdkPath = "C:\\QtSDK"
     cwd = os.getcwd()       # current dir is directory holding qtcreator.py
-    cwd+="/../../settings/windows"
+    cwd+="\\..\\..\\settings\\windows"
 else:
     sdkPath = os.path.expanduser("~/QtSDK")
     cwd = os.getcwd()       # current dir is directory holding qtcreator.py