- Add copyright headers to files that did not already have them
- Update the year to the last year the file was modified in files with
existing headers.
Move the check_for_markers and events parameters from parser() to
__init__(). These parameters control the behavior of the parser, and do
not relate to a particular trace file, so it makes more sense to have
them there.
Both the instrument and utility functions were called `trace-cmd.py`.
`"-"`'s are not valid python identifiers therefore when trying to import
the `trace-cmd` module this causes an error.
