GeomVerify/GeomVerify.cpp
* Using a similarity criterion to further filter the putative matches,
to this end matchKeypoints function signature was changed to receive as
arguments references to images of keypoints under matching.
* In main program, refactor due tu changes in matchKeypoints function.
* Fixed usage message to render argument names more comprehensible.

VocabLearn/VocabLearn.cpp
VocabBuildDB/VocabBuildDB.cpp
VocabMatch/VocabMatch.cpp
* Changed type of variables holding program arguments.
* Using loadList method of FileUtils namespace.
* Minor changes, fixed status messages.

VocabLib/include/VocabTree.h
* Changed increase operator to a more efficient one.