[ANNOUNCE] trace-cmd v2.8

Finally, after a long time, trace-cmd version 2.8 is released!

This will give us a path to release KernelShark 1.0 (after we fix a few
more bugs).

 http://trace-cmd.org

Enjoy!

-- Steve

Features since 2.7:

 o Restructure of the source directory layout

 o Loading of plugins from build directory (over other locations)

 o trace-cmd reset updates (restores more, and keeps tracing_on enabled)

 o trace-cmd stat shows more information about the state of ftrace

 o Better accuracy with trace-cmd record --date

 o Version of executable now saved in trace.dat file
    trace-cmd report --version, will show that version

 o trace-cmd listen has a V3 protocal (V2 is no longer used)
    This is a big step toward a virt-server implementation

 o trace-cmd record --no-filter option added to not filter out
    the trace-cmd tasks while tracing.

 o Better bash completion for trace-cmd commands

 o The "mono" clock is shown now in seconds

 o --max-graph-depth can be used by instances

 And of course a ton of fixes and clean ups.