tests for bootstrap fix

src/zc/buildout/bootstrap_cl_settings.test

+Some people pass buildout settings to bootstrap.
+
+    >>> import os, sys
+    >>> from os.path import dirname, join
+    >>> import zc.buildout
+    >>> bootstrap_py = join(
+    ...    dirname(
+    ...     dirname(
+    ...      dirname(
+    ...       dirname(zc.buildout.__file__)
+    ...        )
+    ...      )
+    ...    ),
+    ...   'bootstrap', 'bootstrap.py')
+    >>> top = tmpdir('top')
+    >>> mkdir(top, 'buildout')
+    >>> os.chdir(top)
+    >>> write('buildout', 'buildout.cfg',
+    ... '''
+    ... [buildout]
+    ... parts =
+    ... ''')
+    >>> write('bootstrap.py', open(bootstrap_py).read())
+    >>> print 'X'; print system(
+    ...     zc.buildout.easy_install._safe_arg(sys.executable) +
+    ...     ' bootstrap.py buildout:directory=' + top +
+    ...     ' -c'+join('buildout', 'buildout.cfg')
+    ...    ); print 'X' # doctest: +ELLIPSIS
+    X
+    Creating directory '/top/bin'.
+    Creating directory '/top/parts'.
+    Creating directory '/top/eggs'.
+    Creating directory '/top/develop-eggs'.
+    Generated script '/top/bin/buildout'.
+    ...
+    X
+
+They might do it with init, but no worries:
+
+    >>> remove(top)
+    >>> top = tmpdir('top')
+    >>> mkdir(top, 'buildout')
+    >>> os.chdir(top)
+    >>> write('bootstrap.py', open(bootstrap_py).read())
+    >>> print 'X'; print system(
+    ...     zc.buildout.easy_install._safe_arg(sys.executable) +
+    ...     ' bootstrap.py buildout:directory=' + top +
+    ...     ' -c'+join('buildout', 'buildout.cfg') +
+    ...     ' init'
+    ...    ); print 'X' # doctest: +ELLIPSIS
+    X
+    Creating '/top/buildout/buildout.cfg'.
+    Creating directory '/top/bin'.
+    Creating directory '/top/parts'.
+    Creating directory '/top/eggs'.
+    Creating directory '/top/develop-eggs'.
+    Generated script '/top/bin/buildout'.
+    ...
+    X

src/zc/buildout/tests.py

@@ -3247,7 +3247,7 @@ def test_suite():
     # only if bootstrap.py is present
     if os.path.exists(bootstrap_py):
         test_suite.append(doctest.DocFileSuite(
-            'bootstrap.txt',
+            'bootstrap.txt', 'bootstrap_cl_settings.test',
             setUp=bootstrapSetup,
             tearDown=zc.buildout.testing.buildoutTearDown,
             checker=renormalizing.RENormalizing([