Dissallow Python 2.4, 2.5, 3.0, and 3.1
Remove obsolete utility code.
More obsolete code removal.
Check for Python 2.6+
More cleanup.
Restore some over-eager 3.1 removals.
Remove another py_set utility code reference.
use cythonize() instead of build_ext override in tutorial examples
update C-library wrapping tutorial to use cythonize()
DOC fix deprecated imports in "Unicode and passing strings" tutorial
DOC proper use of free
Merge pull request #276 from kmike/fix-strings-tutorial

fix deprecated imports in "Unicode and passing strings" tutorial
Added definition for data and shrink_to_fit c++11 vector methods
setup.py can now be launched directly from console
Recompiles source even only .pxd file change (if exist)
Added mention about 'packed' keyword
remove reference to unused utility code
use an actual set() for Scope.types_imported instead of a set-ishly used dict
use arbitrary but predictable C code order when cleaning up imported extension types
added function getline from stdio.h