core: add Trace_session_component
linux: add Trace_session_component
base: add trace accessors to Thread_base interface
base: add tb_dataspace() to Cpu_session interface
base: add tb_dataspace() to Expanding_c_s_c
core: add TRACE
base: add trace startup-code to _main()
linux: initial Tracebuffer support
Add trace + trace_session tests
base: add rpc/signal tracepoints
os: initial Trace_fs server
ports: add noux trace_fs run-script
noux: add tb_dataspace() to Cpu_session_component
foc: add trace_session_component to target.inc
foc: add trace_buffer Cpu_session interface
foc: add trace_buffer start-up to Thread_base
foc: add _session_label to Cpu_session_component