build-sys: Keep .gitignore sorted

Let's try to keep it that way! :-)

.gitignore

@@ -20,12 +20,12 @@
 /*.tar.bz2
 /*.tar.gz
 /*.tar.xz
-/Makefile
-/TAGS
 /GPATH
 /GRTAGS
 /GSYMS
 /GTAGS
+/Makefile
+/TAGS
 /ata_id
 /bootctl
 /build-aux
@@ -42,14 +42,12 @@
 /journalctl
 /libsystemd-*.c
 /libtool
+/linuxx64.efi.stub
 /localectl
 /loginctl
 /machinectl
 /mtd_probe
 /networkctl
-/linuxx64.efi.stub
-/systemd-bootx64.efi
-/test-efi-disk.img
 /scsi_id
 /systemadm
 /systemctl
@@ -61,6 +59,7 @@
 /systemd-backlight
 /systemd-binfmt
 /systemd-bootchart
+/systemd-bootx64.efi
 /systemd-bus-proxyd
 /systemd-cat
 /systemd-cgls
@@ -135,11 +134,11 @@
 /systemd-vconsole-setup
 /tags
 /test-acd
-/test-architecture
-/test-audit-type
 /test-af-list
+/test-architecture
 /test-arphrd-list
 /test-async
+/test-audit-type
 /test-barrier
 /test-bitmap
 /test-boot-timestamp
@@ -183,6 +182,7 @@
 /test-dhcp-server
 /test-dhcp6-client
 /test-dns-domain
+/test-efi-disk.img
 /test-ellipsize
 /test-engine
 /test-env-replace
@@ -190,12 +190,11 @@
 /test-execute
 /test-fdset
 /test-fileio
-/test-fstab-util
 /test-firewall-util
+/test-fstab-util
 /test-hashmap
 /test-hostname
 /test-hostname-util
-/test-ndisc-rs
 /test-id128
 /test-inhibit
 /test-install
@@ -229,6 +228,9 @@
 /test-machine-tables
 /test-mmap-cache
 /test-namespace
+/test-ndisc-rs
+/test-netlink
+/test-netlink-manual
 /test-network
 /test-network-tables
 /test-ns
@@ -244,8 +246,6 @@
 /test-replace-var
 /test-resolve
 /test-ring
-/test-netlink
-/test-netlink-manual
 /test-sched-prio
 /test-set
 /test-sigbus