Refactor tracing and debugging filenames + CONFIG macros

Tracing and Debugging filenames in Litmus were a bit clumsy. Particularly
it was not immediate to tell the content of a tracing/debugging file from
its name, and it was not intuitive to navigate through the CONFIG
macros. This commit refactors tracing/debugging filenames and the
corresponging CONFIG macros to more intuitive names.

Overhead Tracing (employs Feather Trace):
renamed: include/litmus/trace.h -> include/litmus/sched_trace_ohead.h
renamed: litmus/trace.c -> litmus/sched_trace_ohead.c

Scheduling-related tracing (employs Feather Trace):
renamed: include/litmus/sched_trace.h -> include/litmus/sched_trace_task.h
renamed: litmus/sched_task_trace.c -> litmus/sched_trace_task.c

Debugging (TRACE() macro):
renamed: litmus/sched_trace.c -> litmus/debug_trace.c

1 files changed, 1 insertions, 1 deletions

diff --git a/arch/x86/kernel/smp.c b/arch/x86/kernel/smp.c
index ed4c4f54e2ae..f120f4806457 100644
--- a/arch/x86/kernel/smp.c
+++ b/arch/x86/kernel/smp.c
@@ -25,7 +25,7 @@
 
 #include <litmus/preempt.h>
 #include <litmus/debug_trace.h>
-#include <litmus/trace.h>
+#include <litmus/sched_trace_ohead.h>
 
 #include <asm/mtrr.h>
 #include <asm/tlbflush.h>