Remove unused variable from ProcessInfo.

git-svn-id: svn://svn.code.sf.net/p/dmtcp/code/trunk@2458 ba6dc0ae-232f-0410-883f-9ebac64fc565
Replace jalib::{read,write}All with Util::{read,write}All.

git-svn-id: svn://svn.code.sf.net/p/dmtcp/code/trunk@2459 ba6dc0ae-232f-0410-883f-9ebac64fc565