Restore domain to DomainContextHandler signature.

Fixes #52
Copied bundle build files from orange2
Use the most recent version of Qt.
Use 10.7 sdk

(I could not find 10.5)
Update scrip to use python3.3.
Revert "Use the most recent version of Qt."

This reverts commit 9a177018bc56496bc786577ce84643814076dfec.
Do not install PyQwt.

Installation fails on python 3
Python 3 compatibility.
Install orange3 dependencies.
Ignore addons.
Enable retina fonts.
Move installation of external dependencies to build-template.
Include Qt 4.8.5.

Compilation failed for SDKs 10.5 and 10.6. If we use 10.7, we can also
use the newest Qt.
Store exception on failed execution.
Fixed failing sql table tests.
Do not call parent __init__ in dummies.

Dummy models can be constructed without domain.
Fixed a failing basket test.
Add line ending config.
Normalize line endings.
Raise exception if computation failed.