file bugs to bugzilla from anaconda

[Chris Lumens <clumens redhat com>]

Here's an exciting and perhaps somewhat controversial patch set.  This one
removes support for saving bugs via scp and adds in its place support for
saving directly to bugzilla.  High points:

- Uses the product.bugUrl, with some mangling and checking.
- Requires the user to already have an account.
- Prompts for a summary so we don't have to make up something dumb.
  Figures out all the other bug fields automatically.
- Attaches the complete traceback message.  We can add whatever other
  files we want later on.
- Attempts to detect duplicate bugs.  I do this by concatenating the file
  name, function name, and text from each stack frame together and then
  hashing that.  The hash is stored in the status_whiteboard.  When I
  go to make a new bug, I first look for any bugs with the hash present.
- When duplicates are found, the traceback is added as a comment and the
  user is put on the CC list.
- Tries to bring up the network first if none is active.

What still needs to be done:

- Error handling needs a little more testing.
- Right now I search for bugs where the status_whiteboard IS the hash.
  I need to be searching for bugs where the status_whiteboard CONTAINS
  the hash.  I have ideas for how to do this from Will.

So, what does everyone think?  Personally I'm a big fan of this because
it removes some back-and-forth on getting bug information and doesn't
require the user to have another computer set up and ready to scp things
to.

- Chris