maint: Ignore all intermediate and generated man pages

Since commit 9b77ce63 we create a .in file while building all
man pages, including those in the tools/ directory; update the
ignore patterns to take this change into account.

The new ignore patterns are generic enough that we can get rid of
a few existing ones as well.

.gitignore

 *#*#
 *.#*#
+*.[18]
+*.[18].in
 *.a
 *.cov
 *.exe
@@ -57,8 +59,6 @@
 /daemon/libvirt_qemud
 /daemon/libvirtd
 /daemon/libvirtd*.logrotate
-/daemon/libvirtd.8
-/daemon/libvirtd.8.in
 /daemon/libvirtd.init
 /daemon/libvirtd.pod
 /daemon/libvirtd.policy
@@ -155,12 +155,8 @@
 /src/util/virkeymaps.h
 /src/virt-aa-helper
 /src/virtlockd
-/src/virtlockd.8
-/src/virtlockd.8.in
 /src/virtlockd.init
 /src/virtlogd
-/src/virtlogd.8
-/src/virtlogd.8.in
 /src/virtlogd.init
 /tests/*.log
 /tests/*.pid
@@ -175,7 +171,6 @@
 /tests/reconnect
 /tests/ssh
 /tests/test_conf
-/tools/*.[18]
 /tools/libvirt-guests.init
 /tools/libvirt-guests.service
 /tools/libvirt-guests.sh