Fix C module imports

When using 64bit python, there are multiple possible extension
Move suffix search code back to init
Merge pull request #81 from overlordtm/fix-c-imports

Fix C module imports. There could be  multiple possible suffixes for C extensions.
Fix: get correct relative path for qml dir
Fix: add QtQuick to qml dirs copied by default
Various improvements to QT detection with homebrew installs
Merge pull request #82 from glennra/develop

Fixes for qml support
Clean: shorten long lines
Fix: use environment PATH instead of current dir
Fix: make help text more verbose when qmake is not found
Merge pull request #83 from glennra/develop

Improvements for Qt 5 OSX homebrew detection from Jonathan Beezley.
Modified IPython hook in order to catch every submodule.
With IPython 1.1.0 this hook wasn't working because it can't found a
bunch of submodules like html.notebookapp.
Merge pull request #85 from dani84bs/develop

Modified IPython hook in order to catch every IPython submodule.
Added a hook for patsy.
Removed unnecessary line.
Merge pull request #87 from Zaharid/hook-patsy

Added a hook for patsy.
Add FreeBSD support.
don't fail if chflags is not permitted (usefull on FreeBSD)
link to libthr if on freebsd with thread support
Allow user to override buildin hooks