python security, bug fix, and enhancement update

2.4.3-43 - add missing patch 206 Related: rhbz549372 2.4.3-42 - fix testpyclbr to match the urllib change in patch 204 patch 206 - allow the 'noproxy' environment variable to override 'ftpproxy' in urllib2 patch 207 - fix typos in names of patches 204 and 205 Related: rhbz549372 2.4.3-41 - backpo...