Del Makefile:check-m32-compat; add to configure.ac
- check-m32-compat target verbosely failing to find libstdc++.so in 32-bit mode
- that same logic is now moved to configure.ac
- autogen.sh added back at top-level for recreating dependencies
- running autogen.sh updated depcomp and dmtcp/include/config.h.in


git-svn-id: svn://svn.code.sf.net/p/dmtcp/code/trunk@2359 ba6dc0ae-232f-0410-883f-9ebac64fc565