Use the right files for the version being built.

Use the correct root.json file to get TUF working.
Install pycrypto and others into the bundle so TUF can verify the data
correctly.
Move json version specifications to pkg/
Closes #6385, #6378, #6376.
Fix typos
Copy the *.non-ubuntu files to lib/. Closes #6414.
Add bitmask 0.7.0rc6 spec file
Use newer Boost version and verify hash.

Use a specific OpenVPN version (2.3.5) so the build is normalized.

This closes #6296 and #6297.
Add bitmask 0.7.0 spec file
Work in progress...

Add fabric file to update the TUF repo.