build: fix build --without-lxc

'make distcheck' fails from a directory configured --without-lxc:

  GEN      virt-login-shell.1
Can't write-open ../../tools/virt-login-shell.1: Permission denied at /usr/bin/pod2man line 69.

* tools/Makefile.am (EXTRA_DIST): Ship pre-built man page.
Signed-off-by: NEric Blake <eblake@redhat.com>

tools/Makefile.am

@@ -74,7 +74,9 @@ endif WITH_SANLOCK
 if WITH_LXC
 conf_DATA += virt-login-shell.conf
 bin_PROGRAMS += virt-login-shell
-endif WITH_LXC
+else ! WITH_LXC
+EXTRA_DIST += virt-login-shell.conf
+endif ! WITH_LXC
 
 
 dist_man1_MANS = \
@@ -84,7 +86,9 @@ dist_man1_MANS = \
 		virsh.1
 if WITH_LXC
 dist_man1_MANS += virt-login-shell.1
-endif WITH_LXC
+else ! WITH_LXC
+EXTRA_DIST += virt-login-shell.1
+endif ! WITH_LXC
 if WITH_SANLOCK
 dist_man8_MANS = virt-sanlock-cleanup.8
 endif WITH_SANLOCK