[or-cvs] Add an autoconf test for whether unaligned int access is pe...

[Nick Mathewson]

Update of /home/or/cvsroot
In directory moria.mit.edu:/tmp/cvs-serv3947

Modified Files:
	configure.in 
Log Message:
Add an autoconf test for whether unaligned int access is permitted.
It works on macos, and works correctly when I twiddle the test code to
generate a spurious segfault.  Will it work anywhere else?