Improved API for ground texture.
Updated Debian changelog.
Added support for building RPMs with shared libs that are installed in the
architecture-dependent library directory. RPM building documentation and
spec file are in new rpm/ directory.
Added documentation about creating pre- and post- release RPMs.
Updated spec to build on openSUSE and put libs in libenki2 package and python
module in python-pyenki package.
Merge pull request #6 from brettle/master

Changes to build RPMs
Fixed compilation on older Qt versions.
Fixed compilation when Boost is not in default system location.
Fixed compilation of python bindings with old Qt versions.
Added IR sensor calibration tools, updated changelog for new release.
Fixed deb install target for Python
Fixed compilation of deb package.