Revert "launch: Disable autospawn by default when systemd daemon support is enabled."

This reverts commit 7276faca72.

Using the new systemd socket activation for PulseAudio will cause PulseAudio to not
have any connection with D-Bus, breaking device reservation protocol, module-jackdbus-detect
and module-dbus-protocol. Therefore, autospawn is now still enabled by default even if you
build with systemd daemon headers.

configure.ac

@@ -1230,9 +1230,6 @@ AS_IF([test "x$enable_systemd_daemon" != "xno"],
 AS_IF([test "x$enable_systemd_daemon" = "xyes" && test "x$HAVE_SYSTEMD_DAEMON" = "x0"],
     [AC_MSG_ERROR([*** Needed systemd daemon support not found])])
 
-AS_IF([test "x$HAVE_SYSTEMD_DAEMON" = "x1"], [ PA_DEFAULT_AUTOSPAWN=no ], [ PA_DEFAULT_AUTOSPAWN=yes ])
-AC_SUBST(PA_DEFAULT_AUTOSPAWN)
-
 AC_SUBST(HAVE_SYSTEMD_DAEMON)
 AM_CONDITIONAL([HAVE_SYSTEMD_DAEMON], [test "x$HAVE_SYSTEMD_DAEMON" = x1])
 AS_IF([test "x$HAVE_SYSTEMD_DAEMON" = "x1"], AC_DEFINE([HAVE_SYSTEMD_DAEMON], 1, [Have SYSTEMDDAEMON?]))

man/pulse-client.conf.5.xml.in

@@ -69,7 +69,7 @@ USA.
 
     <option>
       <p><opt>autospawn=</opt> Autospawn a PulseAudio daemon when
-      needed. Takes a boolean value, defaults to <opt>@PA_DEFAULT_AUTOSPAWN@</opt>.</p>
+      needed. Takes a boolean value, defaults to <opt>yes</opt>.</p>
     </option>
 
     <option>

src/pulse/client-conf.c

@@ -65,11 +65,7 @@ static const pa_client_conf default_conf = {
     .cookie_from_x11_valid = false,
     .cookie_file_from_application = NULL,
     .cookie_file_from_client_conf = NULL,
-#ifdef HAVE_SYSTEMD_DAEMON
-    .autospawn = false,
-#else
     .autospawn = true,
-#endif
     .disable_shm = false,
     .shm_size = 0,
     .auto_connect_localhost = false,

src/pulse/client.conf.in

@@ -24,7 +24,7 @@
 ; default-server =
 ; default-dbus-server =
 
-; autospawn = @PA_DEFAULT_AUTOSPAWN@
+; autospawn = yes
 ; daemon-binary = @PA_BINARY@
 ; extra-arguments = --log-target=syslog