Incorporated OVS tree into third-party/ovs. From now will build ovs
and use its libraries. Also, removed redundant headers and renamed
pag- and pag_ back to ovs- and ovs_. Modified makefile.am as needed.
Reduced configure.ac version requirements for ODL jenkins.
Added m4 code to remove newer autotools requirements.
Add additional diagnostic output and stop on failure.
more diag
returned to original functionality
added patch to support building using autoconf 2.63
add missing .in files
fix gitignore
more files

Change-Id: I92dda5718e9c37ba85cf15c11bcfed57b531b6be
Signed-off-by: Scott Mann <smann@noironetworks.com>