Detect and use syslog.h or sys/syslog.h corretly. Fixes lack of prototype for

syslog() since Paul Green's POSIX patch.
(This used to be commit d3b29b0b2d)

source3/configure.in

@@ -432,6 +432,7 @@ AC_CHECK_HEADERS(sys/mman.h sys/filio.h sys/priv.h sys/shm.h string.h strings.h
 AC_CHECK_HEADERS(sys/mount.h sys/vfs.h sys/fs/s5param.h sys/filsys.h termios.h termio.h)
 AC_CHECK_HEADERS(sys/termio.h sys/statfs.h sys/dustat.h sys/statvfs.h stdarg.h sys/sockio.h)
 AC_CHECK_HEADERS(security/pam_modules.h security/_pam_macros.h ldap.h lber.h dlfcn.h)
+AC_CHECK_HEADERS(sys/syslog.h syslog.h)
 
 #
 # HPUX has a bug in that including shadow.h causes a re-definition of MAXINT.

source3/include/config.h.in

@@ -1,4 +1,4 @@
-/* include/config.h.in.  Generated automatically from configure.in by autoheader 2.13.  */
+/* include/config.h.in.  Generated automatically from configure.in by autoheader.  */
 
 /* Define if on AIX 3.
    System headers sometimes define this.
@@ -1090,6 +1090,9 @@
 /* Define if you have the <sys/syscall.h> header file.  */
 #undef HAVE_SYS_SYSCALL_H
 
+/* Define if you have the <sys/syslog.h> header file.  */
+#undef HAVE_SYS_SYSLOG_H
+
 /* Define if you have the <sys/termio.h> header file.  */
 #undef HAVE_SYS_TERMIO_H
 
@@ -1108,6 +1111,9 @@
 /* Define if you have the <syscall.h> header file.  */
 #undef HAVE_SYSCALL_H
 
+/* Define if you have the <syslog.h> header file.  */
+#undef HAVE_SYSLOG_H
+
 /* Define if you have the <termio.h> header file.  */
 #undef HAVE_TERMIO_H
 

source3/include/includes.h

@@ -217,8 +217,12 @@
 #include <arpa/inet.h>
 #include <netdb.h>
 
-#ifdef WITH_SYSLOG
+#ifdef HAVE_SYSLOG_H
 #include <syslog.h>
+#else
+#ifdef HAVE_SYS_SYSLOG_H
+#include <sys/syslog.h>
+#endif
 #endif
 
 #include <sys/file.h>