import numpy fails badly when rebuilding veusz

Note: This also block fixing Bug 4869485.

Traceback (most recent call last):
  File "setup.py", line 31, in <module>
    import numpy
  File "/usr/lib/pymodules/python2.7/numpy/__init__.py", line 136, 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 5, in <module>
    import multiarray
ImportError: /usr/lib/pymodules/python2.7/numpy/core/multiarray.so: undefined symbol: Py_InitModule4
Error in sys.excepthook:
Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/apport_python_hook.py", line 59, in apport_excepthook
    from apport.fileutils import likely_packaged
  File "/usr/lib/python2.7/dist-packages/apport/__init__.py", line 1, in <module>
    from apport.report import Report
  File "/usr/lib/python2.7/dist-packages/apport/report.py", line 20, in <module>
    import apport.fileutils
  File "/usr/lib/python2.7/dist-packages/apport/fileutils.py", line 22, in <module>
    from apport.packaging_impl import impl as packaging
  File "/usr/lib/python2.7/dist-packages/apport/packaging_impl.py", line 19, in <module>
    import apt
  File "/usr/lib/python2.7/dist-packages/apt/__init__.py", line 21, in <module>
    import apt_pkg
ImportError: /usr/lib/python2.7/dist-packages/apt_pkg.so: undefined symbol: Py_InitModule4

Original exception was:
Traceback (most recent call last):
  File "setup.py", line 31, in <module>
    import numpy
  File "/usr/lib/pymodules/python2.7/numpy/__init__.py", line 136, 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 5, in <module>
    import multiarray
ImportError: /usr/lib/pymodules/python2.7/numpy/core/multiarray.so: undefined symbol: Py_InitModule4
[47150 refs]