logging code now elided on logging level again (crash in unit tests when compiled with gcc debug...)
change 'active' to flag
added CTrace class
added preliminary trace to lots of files (need more, with the ability to turn off trace per compilation unit)
fix compilation under gcc - still crashes in unit test though
temp: removed registration of log level cvar and gcc doesn't crash in unit_test...?
bugfix: this is the proper fix to the log_level cvar crash
reworked TRACE macro and support files to better track down bugs
update todo.otl
revert log_level variable to static CLog class member
revert log tests to use correct log_level variable