apr: Install apr-local libtool in build dir

apr: Install apr-local libtool in build dir

Building apache with this version of apr would blow up on the results
from:

   apr_config --apr-libtool

Errors of the form:

   /bin/sh: /media/large/tmp/sysroots/x86_64-linux/usr/share/build-1/libtool: No such file or directory

Fix that by ensuring libtool from apr's build lands in
.../usr/share/build-1/.

Signed-off-by: Joe MacDonald <joe.macdonald@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>