[Libguestfs] hivex: Improvents in building Python bindings

[Hilko Bengen]

Building against multiple versions of Python is a lot of fun as it is.
Add autoconf/automake/libtool (and possible distribution-specific
stuff) to the mix and things get really interesting:

On Debian and Ubuntu, building against python 3.3 requires an extra
include path as documented in
<http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=692387>.

As discussed in
<http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=692387>, special
version- and ABI-specific suffixes have been introduced, those are now
part of what is built using libtool.

Cheers,
-Hilko