Device info setup moved inside __init__

Since most of the device data is used only for the checkin procedure,
which is run only after the first login with email and passwd, it
is useless to have functions in GooglePlayAPI to modify them at runtime.

Now if the user wants to specify custom data, this data should be
provided as arguments to the constructor.

gpapi/googleplay.py

@@ -45,11 +45,21 @@ class GooglePlayAPI(object):
     CHECKINURL = BASE + "checkin"
     AUTHURL = BASE + "auth"
 
-    def __init__(self, debug=False, device_codename='bacon'):
+    def __init__(self, debug=False, device_codename='bacon',
+                 locale=None, timezone=None,
+                 sim_operator=None, cell_operator=None):
         self.authSubToken = None
         self.gsfId = None
         self.debug = debug
         self.deviceBuilder = config.DeviceBuilder(device_codename)
+        if locale is not None:
+            self.deviceBuilder.locale = locale
+        if timezone is not None:
+            self.deviceBuilder.timezone = timezone
+        if sim_operator is not None:
+            self.deviceBuilder.device['simoperator'] = sim_operator
+        if cell_operator is not None:
+            self.deviceBuilder.device['celloperator'] = cell_operator
         # save last response text for error logging
         self.lastResponseText = None
 
@@ -609,23 +619,6 @@ def download(self, packageName, versionCode=None, offerType=1,
             return self.delivery(packageName, versionCode, offerType, dlToken,
                                  progress_bar=progress_bar, expansion_files=expansion_files)
 
-    def changeDevice(self, device_codename):
-        self.deviceBuilder = config.DeviceBuilder(device_codename)
-
-    # Helpers
-
-    def getLocale(self):
-        return self.deviceBuilder.locale
-
-    def setLocale(self, locale):
-        self.deviceBuilder.locale = locale
-
-    def getTimeZone(self):
-        return self.deviceBuilder.timezone
-
-    def setTimeZone(self, timezone):
-        self.deviceBuilder.timezone = timezone
-
     @staticmethod
     def getDevicesCodenames():
         return config.getDevicesCodenames()