disable rpath checking warnings (FSBUILD-217)

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@16037 d0543943-73ff-0310-b7d9-9358b9ac24b2

freeswitch.spec

+# disable rpath checking
+%define __arch_install_post /usr/lib/rpm/check-buildroot
 %define _prefix   /opt/freeswitch
 %define prefix    %{_prefix}
 %define sysconfdir	/opt/freeswitch/conf