[Merge] ~ddstreet/ubuntu-dev-tools/+git/ubuntu-dev-tools:megamerge_request into ubuntu-dev-tools:master

[Dan Streetman]

I just force-pushed to correct the ubuntutools/pullpkg.py file mode, and added a commit to correct the way it determines deb/udeb/ddeb.

I think things will be easier if i just open a single MR per commit, though; I'll try to do that sometime soon.
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https://code.launchpad.net/~ddstreet/ubuntu-dev-tools/+git/ubuntu-dev-tools/+merge/375292
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