:core LogSink can now display date/time.
:core Log/LogSink now offer printf and varags.
Specify sources for tags task.

Now it should only pick up stuff in project directories and what's
manually specfieid in the task. As opposed to the entire working copy.
Freshen tags file.
:android fix compilation error.

AssetLoader needs to be updated / tested.
:android Update AndroidLogSink.
:core added .log_tags to config file.

Now you can specify that when setting up logging via .cfg file that it
will only be for a set of tags.
Disambiguate log ... and format, ... messages.
Add TRACE debugging level.
:core fix compilation error from Log.