Merge pull request #5 from yosefm/fb_submission

First actual code in the common base. Contains useful tools for tracking and sequencing, and has potential to highly increase code quality compared to 3d-ptv. See discussion here:
https://groups.google.com/forum/?hl=en&fromgroups=#!topic/openptv/b_T8DvOYt88
Updated docs/references.txt
Create todo.md

Created the todo.md to keep ideas for the meeting and the development plan in one place
Rely on system m4 files, so that autoreconf doesn't complain about missing dir.
Installation instructions.
Update master README
Add checks to configure.ac for MacOSX compatibility. Tested by Alex on Mac and me on Linux.
Merge branch 'master' of https://github.com/OpenPTV/openptv
Merge pull request #8 from yosefm/fix_install

Fix install
Some new todo items.
Merge pull request #9 from OpenPTV/fix_install

Fix install
Merge branch 'master' of https://github.com/OpenPTV/openptv
Build with CMake, still without testing.
Add testing to CMake build system.
Initial CPack code: Package source and Linux binaries.
Remove older (autotools) build system
Add install instructions using the CMake branch (from git).
Review fix: add instructions on modifying PATH on windows.
tried to merge cmake_submission again, problem with liboptv/configure.ac