configre: properly check for libtoolize

Fix a copy-n-paste typo, where the libtoolize check
would re-run the libtool check.

Signed-off-by: Johannes Stezenbach <js@sig21.net>

reporter_name="Harold Grovesteen"

reporter_url="http://sourceware.org/ml/crossgcc/2009-11/msg00052.html"

reporter_comment=""