Merge pull request #6024 from cxmcc/tab-completion-for-symlink-folders

Make tab completion for 'from' suggest symlinked folders/modules.

IPython/core/completerlib.py

@@ -84,7 +84,7 b' def module_list(path):'
         # in its subdirectories. For performance reasons, do not
         # recurse more than one level into subdirectories.
         files = []
-        for root, dirs, nondirs in os.walk(path):
+        for root, dirs, nondirs in os.walk(path, followlinks=True):
             subdir = root[len(path)+1:]
             if subdir:
                 files.extend(pjoin(subdir, f) for f in nondirs)