Add regress for conf files.

regress/conf-syntax.sh

@@ -0,0 +1,14 @@
+#!/bin/sh
+
+PATH=/bin:/usr/bin
+TERM=screen
+
+[ -z "$TEST_TMUX" ] && TEST_TMUX=$(readlink -f ../tmux)
+TMUX="$TEST_TMUX -Ltest"
+$TMUX kill-server 2>/dev/null
+
+for i in conf/*.conf; do
+	$TMUX -f/dev/null start \; source -n $i || exit 1
+done
+
+exit 0