MEDIUM: mux_quic: rename qmux traces to qcm

This patch is part of a renaming affecting mux_quic and related files.
Naming "qcm" will become the new marker for common mux_quic stuffs,
shared both on QUIC and QMux protocols. The final objective is to limit
"qmux" naming for stuffs related to the new experimental protocol of the
same name.

The current patch renames mux_quic traces token to "qcm". This is the
only change with external visible changes in this renaming serie. Thus,
to preserve compatibility, trace source alias is set to the older name
"qmux". This relies on the previous patch which introduced this new
structure member.

Author: a-denoyelle

examples/traces.cfg

@@ -16,6 +16,6 @@ traces
 	trace applet verbosity complete start now
 	trace h3 start now
 	trace quic start now
-	trace qmux start now
+	trace qcm start now
 	trace peers start now
 .endif

src/haterm_init.c

@@ -56,7 +56,7 @@ static const char *haterm_cfg_traces_str =
             "\ttrace h1 sink stderr level user start now verbosity minimal\n"
             "\ttrace h2 sink stderr level user start now verbosity minimal\n"
             "\ttrace h3 sink stderr level user start now verbosity minimal\n"
-            "\ttrace qmux sink stderr level user start now verbosity minimal\n";
+            "\ttrace qcm sink stderr level user start now verbosity minimal\n";
 
 /* Very small API similar to buffer API to carefully build some strings */
 #define HBUF_NULL ((struct hbuf) { })

src/qcm_trace.c

@@ -35,7 +35,8 @@ static const struct name_desc qcm_trace_decoding[] = {
 };
 
 struct trace_source trace_qcm = {
-	.name = IST("qmux"),
+	.name = IST("qcm"),
+	.alias = IST("qmux"),
 	.desc = "QUIC multiplexer",
 	.arg_def = TRC_ARG1_CONN,  /* TRACE()'s first argument is always a connection */
 	.default_cb = qcm_trace,
@@ -129,7 +130,7 @@ static void qcm_trace_fill_ctx(struct trace_ctx *ctx, const struct trace_source
 }
 
 
-/* register qmux traces */
+/* register qcm traces */
 INITCALL1(STG_REGISTER, trace_register_source, TRACE_SOURCE);
 
 static char *qcc_app_st_to_str(const enum qcc_app_st st)