ENH: Explicit import of modules into the space in core/__init__.py

Otherwise there is no strict guarantee that they would be available
later on during population of __all__.

This issue was ran into while opening a python file in emacs with python-mode
and ropemacs:

Loading pymacs...done
Pymacs loading ropemacs...
File mode specification error: (error "Python: Traceback (most recent call last):
  File \"/usr/lib/python2.7/dist-packages/Pymacs/pymacs.py\", line 146, in loop
    value = eval(text)
  File \"<string>\", line 1, in <module>
  File \"/usr/lib/python2.7/dist-packages/Pymacs/pymacs.py\", line 246, in pymacs_load_helper
    object = __import__(module_name)
  File \"/usr/lib/python2.7/dist-packages/ropemacs/__init__.py\", line 4, in <module>
    import ropemode.interface
  File \"/usr/lib/python2.7/dist-packages/ropemode/interface.py\", line 3, in <module>
    import rope.base.change
  File \"/usr/lib/python2.7/dist-packages/rope/base/change.py\", line 2, in <module>
    import difflib
  File \"/usr/lib/python2.7/difflib.py\", line 36, in <module>
    from collections import namedtuple as _namedtuple
  File \"collections.py\", line 16, in <module>
    import numpy as np
  File \"/usr/lib/pymodules/python2.7/numpy/__init__.py\", line 137, in <module>
    import add_newdocs
  File \"/usr/lib/pymodules/python2.7/numpy/add_newdocs.py\", line 9, in <module>
    from numpy.lib import add_newdoc
  File \"/usr/lib/pymodules/python2.7/numpy/lib/__init__.py\", line 4, in <module>
    from type_check import *
  File \"/usr/lib/pymodules/python2.7/numpy/lib/type_check.py\", line 8, in <module>
    import numpy.core.numeric as _nx
  File \"/usr/lib/pymodules/python2.7/numpy/core/__init__.py\", line 30, in <module>
    __all__ += numeric.__all__
NameError: name numeric is not defined
")

0 files changed, 0 insertions, 0 deletions