trace-cmd library: Internal helpers for compressing data New library internal helper functions are introduced, to add compression functionality to the output trace handler. Link: https://lore.kernel.org/linux-trace-devel/20220126094906.570451-3-tz.stoyanov@gmail.com Signed-off-by: Tzvetomir Stoyanov (VMware) <tz.stoyanov@gmail.com> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>