Add basic server-side tracing functionality

Restricted to L4D for now due to known ABI compatibility issues on other
branches. This should be easy to fix later when needed elsewhere.

Committer's note: I've counted myself as a joint author and added a
copyright notice to the .c file since this code is reasonably
modified from the code bill originally wrote last year.
but June of this year and , so I've gone ahead and
corrected his copyright notice too, with permission.

1 files changed, 1 insertions, 0 deletions

diff --git a/compile b/compile
index 17a1ba4..328c08b 100755
--- a/compile
+++ b/compile
@@ -81,6 +81,7 @@ src="\
 	os.c
 	portalcolours.c
 	sst.c
+	trace.c
 	xhair.c
 	x86.c"
 if [ "$dbg" = 1 ]; then src="$src \