WIP default to local bootstrap when no args

src/zc/buildout/buildout.py

@@ -615,7 +615,7 @@ class Buildout(DictMixin):
 
         self._setup_directories()
 
-        if '--all-local' in args:
+        if not args:
             # Now install buildout and dependent eggs, and record destination eggs:
             dest = self['buildout']['eggs-directory']
             path = [self['buildout']['develop-eggs-directory']]