Finally make it possible to use auto_import_modules for packages

This means that you can now write 'from gi.repository import Gtk' and Gtk completions work.

It also means that other libraries could be used like that for speed or other reasons.

Fixes #531

jedi/evaluate/imports.py

@@ -277,6 +277,7 @@ class Importer(object):
     def follow(self):
         if not self.import_path:
             return NO_CONTEXTS
+
         return self._do_import(self.import_path, self.sys_path_with_modifications())
 
     def _do_import(self, import_path, sys_path):
@@ -300,6 +301,14 @@ class Importer(object):
                 # Old style
                 return self._do_import(('flaskext',) + import_path[2:], sys_path)
 
+        if import_parts[0] in settings.auto_import_modules:
+            module = compiled.load_module(
+                self._evaluator,
+                name='.'.join(import_parts),
+                sys_path=sys_path,
+            )
+            return ContextSet(module)
+
         module_name = '.'.join(import_parts)
         try:
             return ContextSet(self._evaluator.module_cache.get(module_name))
@@ -464,7 +473,7 @@ class Importer(object):
 
 
 def _load_module(evaluator, path=None, code=None, sys_path=None,
-                 module_name=None, safe_module_name=False):
+                 module_name=None, safe_module_name=False, auto_import=False):
     try:
         return evaluator.module_cache.get(module_name)
     except KeyError:
@@ -485,9 +494,8 @@ def _load_module(evaluator, path=None, code=None, sys_path=None,
         if sys_path is None:
             sys_path = evaluator.get_sys_path()
 
-        dotted_path = path and dotted_from_fs_path(path, sys_path)
         if path is not None and path.endswith(('.py', '.zip', '.egg')) \
-                and dotted_path not in settings.auto_import_modules:
+                and not auto_import:
 
             module_node = evaluator.parse(
                 code=code, path=path, cache=True, diff_cache=True,