trace-cmd: Change plugin install directories

To be compliant with XDG user directory layout,
the user's plugin directory is changed from
~/.traceevent/plugins to ~/.local/lib/traceevent/plugins/

The system plugin directory is changed from
(install_prefix)/lib/trace-cmd/plugins to (install_prefix)/lib/traceevent/plugins
This change paves the way for implementing trace-cmd specific plugins.

Link: https://lore.kernel.org/linux-trace-devel/20190313144206.41e75cf8@patrickm
Link: http://lore.kernel.org/linux-trace-devel/20191002114152.30048-5-tz.stoyanov@gmail.com

Suggested-by: Patrick McLean <chutzpah@gentoo.org>
Signed-off-by: Tzvetomir Stoyanov (VMware) <tz.stoyanov@gmail.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
3 files changed