autogen: set exit on error

Signed-off-by: Noah Watkins <noahwatkins@gmail.com>
autogen.sh: use glibtoolize when available

libtoolize is called glibtoolize on osx.

Signed-off-by: Noah Watkins <noahwatkins@gmail.com>
Merge pull request #827 from ceph/port/bootstrap

Port/bootstrap