Bug 1622301 - Establish comm/python directory. r=mkmelin

--HG--
extra : amend_source : f0c509f60bcc8fa735bd59e2f2f38e2e12cafff8

python/README

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+This directory contains common Python code for Thunderbird.
+
+The basic rule is that if Python code is cross-module (that's "module" in the
+Mozilla meaning - as in "module ownership") and is MPL-compatible, AND it
+applies only to applications build from comm-central derived repositories
+(Thunderbird and Seamonkey), it should go here.
+
+What should not go here:
+
+* Vendored python modules (use third_party/python instead)
+* Python that is not MPL-compatible (see other-licenses/)
+* Python that has good reason to remain close to its "owning" (Mozilla)
+  module (e.g. it is only being consumed from there).

python/moz.build

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+# -*- Mode: python; indent-tabs-mode: nil; tab-width: 40 -*-
+# vim: set filetype=python:
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# Default extra components to build config
+with Files('**'):
+    BUG_COMPONENT = ('Thunderbird', 'Build Config')