build: use expanded localstatedir for #define

Use the expanded form of localstatedir in autoconf.h instead of the
unexpanded one, the difference being:

    #define LOCAL_STATE_DIR "${prefix}/var"

and

    #define LOCAL_STATE_DIR "/usr/local/var"

assuming default ./configure arguments.

Fixes commit b6a610df26.

configure.ac

@@ -2508,7 +2508,6 @@ AC_SUBST(e_logcertsdir)
 AC_SUBST(e_sysconfdir)
 AC_DEFINE_UNQUOTED([CONFIG_DIR],["$e_sysconfdir"],[Our CONFIG_DIR])
 AC_SUBST(e_localstatedir)
-AC_DEFINE_UNQUOTED([LOCAL_STATE_DIR],["$localstatedir"],[Our LOCAL_STATE_DIR])
 AC_SUBST(e_datadir)
 AC_DEFINE_UNQUOTED([DATA_DIR],["$e_datadir"],[Our DATA_DIR])
 AC_SUBST(e_magic_file)
@@ -2525,6 +2524,7 @@ EXPAND_VARIABLE(datadir, CONFIGURE_DATAROOTDIR)
 AC_SUBST(CONFIGURE_PREFIX)
 AC_SUBST(CONFIGURE_SYSCONDIR)
 AC_SUBST(CONFIGURE_LOCALSTATEDIR)
+AC_DEFINE_UNQUOTED([LOCAL_STATE_DIR],["$CONFIGURE_LOCALSTATEDIR"],[Our LOCAL_STATE_DIR])
 AC_SUBST(CONFIGURE_DATAROOTDIR)
 AC_SUBST(PACKAGE_VERSION)
 AC_SUBST(MAJOR_MINOR)