Search path updated for libmtcp.so.

git-svn-id: svn://svn.code.sf.net/p/dmtcp/code/trunk@2396 ba6dc0ae-232f-0410-883f-9ebac64fc565
Bumping version to 2.1.

git-svn-id: svn://svn.code.sf.net/p/dmtcp/code/trunk@2397 ba6dc0ae-232f-0410-883f-9ebac64fc565