Try to get the qrcode stuff to work on the robot.
Fix zbar things.
Fix Resolution
Merge branch 'qrcode' of github.com:corobotics/corobots into qrcode

Conflicts:
	corobot_qrcode/src/barcodepublisher.cpp
updated barcodePoints
Fix barcode -> qrcode in localization.
QRCode: Fix a bad bug in the covariance matrix.
Fix proc.init() call that breaks the robot.
Fix qrcode main and add comments.

Apparently we never tried the threaded mode of zbar while using the top
of tree version of the library; it now works and solves our problems.
Fix imports and never do "using namespace" in a header.

There were many unused imports, or imports in a header for stuff in the
cpp file, and several using namespace things inside headers.
A typo of heart-stopping proportions.
Update qrcode readme to reflect the forked zbar library.
Merge pull request #10 from corobotics/max

Rewrite of the navigation node.
Merge branch 'qrcode'