first pass at lcm logger sfunction
asynchronous poll seems to be working well
stores data to simple log
successfully writes data to workspace structure
simple lcm log publisher
first pass at integrating lcmloging all the way through visualizer/playback.  not tested yet
lcm logging + playback works
got lcm logger working
fix gcc compile (again)
Merge pull request #242 from RussTedrake/lcm_logger_sfun

lcm/lcmgl integration with simulate then playback