[Libguestfs] [PATCH 1/2] use apt-get instead of aptitude

[Hilko Bengen]

* Richard W.M. Jones:

>> Uh, I just checked the changelog. this got added in 0.8.11, after the
>> Squeeze release. I'll try to find another way for using the cache.
>> 
>> Sorry for the noise.
>
> Is patch 2 independent or shall I wait?

I believe that aptitude does not have the --print-uris option, so one
would still need to use apt-get for that.

I'll test some more tonight and prepare another patch.

Since this is the first time I have put my fingers into OCaml code, I'd
appreciate some feedback regarding style and such.

-Hilko