Enabled binary visual words for dictionary (for loop closure detection).

git-svn-id: http://rtabmap.googlecode.com/svn/trunk/rtabmap@1677 f169173b-cf89-36c8-b27e-44dbe73f0c83
Fixed freenect camera to handle K4W (libfreenect must be built from https://github.com/renewagner/libfreenect, k4w-wip branch). 

git-svn-id: http://rtabmap.googlecode.com/svn/trunk/rtabmap@1678 f169173b-cf89-36c8-b27e-44dbe73f0c83
Binary descriptors (ORB, BRIEF, FREAK) can now be used for the visual dictionnary: maybe not as discriminative as SIFT/SURF on large environments, the advantage is that RTAB-Map will work without Patent/noncommercial licenses of SIFT and SURF.
A new option is added to re-extract features when a loop closure hypothesis is found. 
Another new option is to force 2D (3DoF) transform on visual odometry and loop closures.

git-svn-id: http://rtabmap.googlecode.com/svn/trunk/rtabmap@1679 f169173b-cf89-36c8-b27e-44dbe73f0c83
DatabaseViewer: ask saving changes to database on Exit
New parameter: Mem/InitWMWithAllNodes

git-svn-id: http://rtabmap.googlecode.com/svn/trunk/rtabmap@1680 f169173b-cf89-36c8-b27e-44dbe73f0c83
rtabmap::getGraph() returning mapIds too

git-svn-id: http://rtabmap.googlecode.com/svn/trunk/rtabmap@1681 f169173b-cf89-36c8-b27e-44dbe73f0c83
added new statistics (features extracted current image, local map size) shown in GUI for Odometry

git-svn-id: http://rtabmap.googlecode.com/svn/trunk/rtabmap@1719 f169173b-cf89-36c8-b27e-44dbe73f0c83
fixed saving/loading odomQualityThr to ini file

git-svn-id: http://rtabmap.googlecode.com/svn/trunk/rtabmap@1722 f169173b-cf89-36c8-b27e-44dbe73f0c83