C Coverage does not work (was: libtau_Linux_32bit_py27.so: undefined symbol: __gcov_merge_add)

New installation on a Ubuntu 12.04.2 LTS machine

during build I get alot of warnings but it somehow compiles but running ipython results into:
```python
Python 2.7.3 (default, Aug  1 2012, 05:16:07)

In [1]: import obspy
/private-backup/home/obspy/update-docs/src/obspy/obspy/core/util/base.py:14: UserWarning: Module dap was already imported from None, but /usr/lib/python2.7/dist-packages is being added to sys.path
  from pkg_resources import iter_entry_points, load_entry_point

In [2]: import obspy.taup
---------------------------------------------------------------------------
ImportError                               Traceback (most recent call last)
/private-backup/home/obspy/update-docs/bin/<ipython-input-2-9713b7c75be3> in <module>()
----> 1 import obspy.taup

/private-backup/home/obspy/update-docs/src/obspy/obspy/taup/__init__.py in <module>()
     16
     17 # Convenience imports.

---> 18 from obspy.taup.taup import getTravelTimes, travelTimePlot
     19
     20 if __name__ == '__main__':

/private-backup/home/obspy/update-docs/src/obspy/obspy/taup/taup.py in <module>()
      7 import os
      8
----> 9 from obspy.lib import libtau
     10
     11 # Directory of obspy.taup.


/private-backup/home/obspy/update-docs/src/obspy/obspy/lib/__init__.py in <module>()
      6 libtau = __import__('libtau_%s_%s_py%s' % (platform.system(),
      7     platform.architecture()[0], ''.join([str(i) for i in
----> 8     platform.python_version_tuple()[:2]])), globals(), locals())

ImportError: /private-backup/home/obspy/update-docs/src/obspy/obspy/lib/libtau_Linux_32bit_py27.so: undefined symbol: __gcov_merge_add

In [3]: quit()
```