systemd-daemon is contained by libsystemd, so we just need link libsystemd to 
obtain the implementation of systemd-daemon's function.

Signed-off-by: Bian Naimeng <biannm@cn.fujitsu.com>

diff -Nurp samba-4.1.12.orig/lib/util/wscript_build samba-4.1.12/lib/util/wscript_build
--- samba-4.1.12.orig/lib/util/wscript_build	2014-09-08 18:26:14.000000000 +0900
+++ samba-4.1.12/lib/util/wscript_build	2015-04-29 16:16:58.303000207 +0900
@@ -10,7 +10,7 @@ bld.SAMBA_LIBRARY('samba-util',
                     server_id.c dprintf.c parmlist.c bitmap.c pidfile.c
                     tevent_debug.c util_process.c memcache.c''',
                   deps='DYNCONFIG',
-                  public_deps='talloc tevent execinfo uid_wrapper pthread LIBCRYPTO charset util_setid systemd-daemon',
+                  public_deps='talloc tevent execinfo uid_wrapper pthread LIBCRYPTO charset util_setid systemd',
                   public_headers='debug.h attr.h byteorder.h data_blob.h memory.h safe_string.h time.h talloc_stack.h xfile.h dlinklist.h samba_util.h string_wrappers.h',
                   header_path= [ ('dlinklist.h samba_util.h', '.'), ('*', 'util') ],
                   local_include=False,
diff -Nurp samba-4.1.12.orig/wscript samba-4.1.12/wscript
--- samba-4.1.12.orig/wscript	2014-07-28 16:13:45.000000000 +0900
+++ samba-4.1.12/wscript	2015-04-29 16:17:52.338000264 +0900
@@ -183,16 +183,16 @@ def configure(conf):
 		conf.env['ENABLE_PIE'] = True
 
     if Options.options.enable_systemd != False:
-        conf.check_cfg(package='libsystemd-daemon', args='--cflags --libs',
-                       msg='Checking for libsystemd-daemon', uselib_store="SYSTEMD-DAEMON")
-        conf.CHECK_HEADERS('systemd/sd-daemon.h', lib='systemd-daemon')
-        conf.CHECK_LIB('systemd-daemon', shlib=True)
+        conf.check_cfg(package='libsystemd', args='--cflags --libs',
+                       msg='Checking for libsystemd', uselib_store="SYSTEMD-DAEMON")
+        conf.CHECK_HEADERS('systemd/sd-daemon.h', lib='systemd')
+        conf.CHECK_LIB('systemd', shlib=True)
 
     if conf.CONFIG_SET('HAVE_SYSTEMD_SD_DAEMON_H'):
         conf.DEFINE('HAVE_SYSTEMD', '1')
         conf.env['ENABLE_SYSTEMD'] = True
     else:
-        conf.SET_TARGET_TYPE('systemd-daemon', 'EMPTY')
+        conf.SET_TARGET_TYPE('systemd', 'EMPTY')
         conf.undefine('HAVE_SYSTEMD')
 
     conf.SAMBA_CONFIG_H('include/config.h')