trace: [configure] rename CONFIG_*_TRACE into CONFIG_TRACE_*

Provides a more hierarchical view of the variable domain.

Also adds the CONFIG_TRACE_* variables for all backends.

[Stefan added missing 'test' in stap if statement]

Signed-off-by: Lluís Vilanova <vilanova@ac.upc.edu>
Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
diff --git a/monitor.c b/monitor.c
index 04f465a..935aa33 100644
--- a/monitor.c
+++ b/monitor.c
@@ -57,7 +57,7 @@
 #include "json-parser.h"
 #include "osdep.h"
 #include "cpu.h"
-#ifdef CONFIG_SIMPLE_TRACE
+#ifdef CONFIG_TRACE_SIMPLE
 #include "trace.h"
 #endif
 #include "ui/qemu-spice.h"
@@ -592,7 +592,7 @@
     help_cmd(mon, qdict_get_try_str(qdict, "name"));
 }
 
-#ifdef CONFIG_SIMPLE_TRACE
+#ifdef CONFIG_TRACE_SIMPLE
 static void do_change_trace_event_state(Monitor *mon, const QDict *qdict)
 {
     const char *tp_name = qdict_get_str(qdict, "name");
@@ -996,7 +996,7 @@
 }
 #endif
 
-#if defined(CONFIG_SIMPLE_TRACE)
+#if defined(CONFIG_TRACE_SIMPLE)
 static void do_info_trace(Monitor *mon)
 {
     st_print_trace((FILE *)mon, &monitor_fprintf);
@@ -3135,7 +3135,7 @@
         .help       = "show roms",
         .mhandler.info = do_info_roms,
     },
-#if defined(CONFIG_SIMPLE_TRACE)
+#if defined(CONFIG_TRACE_SIMPLE)
     {
         .name       = "trace",
         .args_type  = "",