LU-1199 build: Simplify autotools version checks

Simplify the check for minumum autoconf and automake
versions by using standard macros in configure.ac
rather than using shell functions in autogen.sh.

Note that I am bumping the minimum automake version
from 1.9 to 1.10.

Change-Id: I009c316a54d8d517abea0d1808dc244e2353b2aa
Signed-off-by: Christopher J. Morrone <morrone2@llnl.gov>
Reviewed-on: http://review.whamcloud.com/4693


Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Tested-by: Hudson
Tested-by: Maloo <whamcloud.maloo@gmail.com>
Reviewed-by: Brian J. Murrell <brian.murrell@intel.com>
Reviewed-by: Minh Diep <minh.diep@intel.com>