cleanup

1. [SG] logging + config

1. [CG] ensuring py2.5 compatibility for distribution

• i think there was only one place (mri_convert) where this is a problem and this has been addressed

1. [SG] packaging (pypi)

1. doc cleanup

• [SG] no doc for building pure python interface

1. regression tests

1. [SG] move to ipython 0.10.1 with checks for backward compatibility

1. [CG] integrate xnat branch updates

• support for spm binary
• includes configurable deletion of working directory components
• [CG] should include configurable deletion of unneeded outputs

1. cleanup mindflows

• move all examples from nipype.examples to mindflows
• ensure mindflows packaged under externals