Merge pull request #74 from SableRaf/master

Cleaner camera initialize + Better Processing button example
Fix pkg-config library directory (fixes #75)

On 64-bit systems, we pick up the libraries from lib64.
Updated UniMove now available as submodule

Thanks to Patrick Jarnfelt from the Copenhagen Game Collective for
updating the UniMove bindings to the latest PS Move API version.
Install qt bindings to lib64 on 64-bit systems
Update version to 3.0.1
Merge pull request #79 from MooseTheBrown/master

Fix qt bindings installation on 64-bit systems + version update to 3.0.1
Update OpenCV Git repository URL (Fixes #80)
Check errors explicitly; don't rely on assert().
Add support for CMAKE_LIBRARY_ARCHITECTURE.
Generate an error if Qt bindings were requested but are not able to be built.
Remove dirs files.
Update debian/compat to 9.
Add support for multi-arch.
Update standards-version.
Let libpsmoveapi3-dev package get shlibs:Depends from libpsmoveapi3 instead of directly.
Add support for debug symbol packages, Qt.

This would be better as two patches, but I'm not sure if it's worth
the overhead to separate them.

Note that I added a Recommends: for libpsmoveapiqt3.  I'm not sure if
that is ideal, but I didn't want to make a separate -dev package just
for libpsmoveapiqt3, and Requires: was a bit limiting.
Tracker: Avoid bogus warning for Exposure_LOW

Thanks to CJ Davies on the mailing list for reporting.
New utility: psmove_dfu_mode

Thanks to Alexander for researching the magic numbers.
Various compiler warning fixes
Prefer local filenames to filenames in the data directory