Roll everyone over to the new timer implementation by default

Last step before deleting the old code and merging to master, everything
seems to be working well for people now.

Also confirmed that there was an FTE use-after-free bug in reading the
grenade timer sound from cvar that was occasionally resulting in
crashes.  That bug is being fixed FTE side and our migration to
auto-cvar in the meanwhile is sufficient to fix on ourside.  This fixes
client hitches so let's make sure everyone gets it again.

Author: newby

csqc/events.qc

@@ -310,15 +310,9 @@ string cached_timer;
 string GetGrenTimerSound() {
     string wav = CVARS(FOCMD_GRENTIMERSOUND);
 
-    // The string NE-uop below is suspect in crashes.  Possible interaction
-    // with cvar_string implementation.  Hopefully the migration to autocvar
-    // resolves this, but also put it behind a debug control temporarily so we
-    // can test with/without.
-    if (CVARF(fo_grentimer_debug) & 8 == 1) {
-        if (cached_timer != wav) {
-            precache_sound(wav);
-            cached_timer = wav;
-        }
+    if (cached_timer != wav) {
+        precache_sound(wav);
+        cached_timer = wav;
     }
     return wav;
 }
@@ -406,10 +400,10 @@ void ParseGrenPrimed(float grentype, float primed_at, float explodes_at) {
     }
 
     float debug_print_state = CVARF(fo_grentimer_debug) & 1;
-    float debug_use_new_sound = CVARF(fo_grentimer_debug) & 2;
+    float debug_use_old_sound = CVARF(fo_grentimer_debug) & 4;
 
     float play_old_sound = FALSE;
-    if (!debug_use_new_sound) {
+    if (debug_use_old_sound) {
         play_old_sound = timer_flags & FL_GT_SOUND;
         timer_flags &= ~FL_GT_SOUND;
     }
@@ -429,7 +423,7 @@ void ParseGrenPrimed(float grentype, float primed_at, float explodes_at) {
 
         print(sprintf("primed_at=%0.2f explodes_at=%0.2f fuse=%0.2f new=%d\n",
                     primed_at, explodes_at, explodes_at - primed_at,
-                    debug_use_new_sound));
+                    !debug_use_old_sound));
         print(sprintf("ideal=%0.2f new=%0.2f old=%0.2f\n",
                 expires_ideal, expires_new, expires_old));
     }