polkit build break as libtool upgrade to 2.4.7

[junzhuimx]

As libtool is upgraded from 2.4.6 to 2.4.7 on the poky master, the libtool meets the build break as:
| libtool: Version mismatch error. This is libtool 2.4.7, but the
| libtool: definition of this LT_INIT comes from libtool 2.4.6.
| libtool: You should recreate aclocal.m4 with macros from libtool 2.4.7
| libtool: and run autoconf again.
| make[5]: *** [Makefile:494: pwd.lo] Error 63
| make[5]: *** Waiting for unfinished jobs....
| libtool: Version mismatch error. This is libtool 2.4.7, but the
| libtool: definition of this LT_INIT comes from libtool 2.4.6.
| libtool: You should recreate aclocal.m4 with macros from libtool 2.4.7
| libtool: and run autoconf again.
| libtool: Version mismatch error. This is libtool 2.4.7, but the
| libtool: definition of this LT_INIT comes from libtool 2.4.6.
| libtool: You should recreate aclocal.m4 with macros from libtool 2.4.7
| libtool: and run autoconf again.
| libtool: Version mismatch error. This is libtool 2.4.7, but the
| libtool: definition of this LT_INIT comes from libtool 2.4.6.
| libtool: You should recreate aclocal.m4 with macros from libtool 2.4.7
| libtool: and run autoconf again.
| make[5]: *** [Makefile:494: grp.lo] Error 63
| make[5]: *** [Makefile:494: netgroup.lo] Error 63
| make[5]: *** [Makefile:494: netdb.lo] Error 63

[kraj]

97c904c fixed it.