Update .gitignore files

Bug: https://bugs.freedesktop.org/show_bug.cgi?id=88943Reviewed-by: Simon McVittie <simon.mcvittie@collabora.co.uk>

bus/.gitignore

@@ -24,3 +24,5 @@ test-bus-system
 dbus.service
 dbus.socket
 org.freedesktop.dbus-session.plist
+example-session-disable-stats.conf
+example-system-enable-stats.conf

test/.gitignore

@@ -29,8 +29,11 @@ test-relay
 test-dbus-daemon
 test-marshal
 manual-authz
+manual-dir-iter
+manual-tcp
 test-dbus-daemon-eavesdrop
 test-printf
 test-refs
 test-syntax
 test-syslog
+internals/.dirstamp

test/data/valid-config-files/.gitignore

@@ -4,3 +4,4 @@ incoming-limit.conf
 session.conf
 system.conf
 run-with-tmp-session-bus.conf
+finite-timeout.conf