libkbus.so builds without version major/minor

[GoogleCodeExporter]

The build script for libkbus.so should generate a file with the major and minor 
for consistency with ldconfig's expectations.

E.g.  rather than creating libkbus.so, the result shoudl be libkbus.so.0.3, 
with the soname and link names created using symbolic links if at all.

Original issue reported on code.google.com by [email protected] on 20 Jul 2010 at 10:30