Add *.pyc to .gitignore

This is useful if buildout.python is pulled as a git submodule, as this
results in a dirty submodule warning in the main repo.
removed clearwind.arecibo from upiq.cfg
version pins for 4.3.1 in build, plone.cfg extends
update third-party add-on versions, recipe and buildout versions
use show-picked-versions for buildout 1.7
version pin Products.ZServerViews, which is a dep of munin.zope 2.0
Merge branch 'master' of github.com:upiq/plonebuild into transitional42
Update to PyPy 2.0.2
Merge pull request #31 from nidico/gitignore-pyc

Add *.pyc to .gitignore
Update virtualenv to 1.10.1
Ensure Python 2.5 uses an older version of Virtualenv
Ensure Python 2.5 uses last compatible Virtualenv 1.9.1; fix build issues.
Merge branch 'master' of git://github.com/collective/buildout.python into transitional42