[master] 0ce9097 Update docs for ReqStart in vsl(7), adding the listener name field.

[Geoff Simmons]

commit 0ce909774a37368e2b8b73f56db845f4928091d6
Author: Geoff Simmons <geoff at uplex.de>
Date:   Mon Feb 26 16:12:20 2018 +0100

    Update docs for ReqStart in vsl(7), adding the listener name field.

diff --git a/include/tbl/vsl_tags.h b/include/tbl/vsl_tags.h
index dc57526..4b75923 100644
--- a/include/tbl/vsl_tags.h
+++ b/include/tbl/vsl_tags.h
@@ -269,13 +269,14 @@ SLTM(VCL_return, 0, "VCL method return value",
 )
 
 SLTM(ReqStart, 0, "Client request start",
-	"Start of request processing. Logs the client IP address and port"
-	" number.\n\n"
+	"Start of request processing. Logs the client address, port number "
+	" and listener endpoint name (from the -a command-line argument).\n\n"
 	"The format is::\n\n"
-	"\t%s %s\n"
-	"\t|  |\n"
-	"\t|  +- Client Port number\n"
-	"\t+---- Client IP4/6 address\n"
+	"\t%s %s %s\n"
+	"\t|  |  |\n"
+	"\t|  |  +-- Listener name (from -a)\n"
+	"\t|  +----- Client Port number (0 for Unix domain sockets)\n"
+	"\t+-------- Client IP4/6 address (0.0.0.0 for UDS)\n"
 	"\n"
 )