Be smarter about config generator default package name

Using python setup.py --name instead of the current working
directory will allow the config generator to work correctly by
default even if the local source tree was cloned into a directory
that doesn't match the project name.

Change-Id: Iea529e7e691d94402f658e7095387dc3e98e32fe
Closes-Bug: #1288417
Merge "Be smarter about config generator default package name"