Fixes a variant of #4 for Windows, where readline should not need to be copied
Merge pull request #419 from iguananaut/win32-readline-issue

Don't try to copy readline on Windows
o adapt to pypy's stdlib path change only for py3k
o pypy < 1.9 no longer has a 'modified-' stdlib path
Fixed logging statements that would break with parameters containing '%'.
Merge pull request #423 from roskakori/develop

Fixed logging statements that would break with parameters containing '%'
min supported version is now python 2.6