Addendum to 2843.

git-svn-id: svn://svn.code.sf.net/p/dmtcp/code/trunk@2846 ba6dc0ae-232f-0410-883f-9ebac64fc565
Minor changes to top level Makefile.in.

git-svn-id: svn://svn.code.sf.net/p/dmtcp/code/trunk@2847 ba6dc0ae-232f-0410-883f-9ebac64fc565
Fix --enable-m32 with __sync_bool_swap_and_compare

- We need to specify -march=i686 for it to compile properly.

git-svn-id: svn://svn.code.sf.net/p/dmtcp/code/trunk@2848 ba6dc0ae-232f-0410-883f-9ebac64fc565