Added support for password authentication between master and worker.
Updated copyright boilerplate.
Combined all uses of srand into a common random_init().
Changed all isntances of srand to random_init().
Merge branch 'master' of https://github.com/cooperative-computing-lab/cctools

* 'master' of https://github.com/cooperative-computing-lab/cctools:
  Adds comments dag_node.
  Adds FreeBSD monitoring of memory and cpu time.
  Memory maps io test with getrusage memory faults.
  The code that handles sending input files is now refactored into 4 functions: 1. put_input_item() which replaces put_file() from before 2. put_directory() which sends mkdir() to worker and sends its contents by calling (recursively) put_directory() or put_file() 3. put_file_whole() which sends the entire file contents to worker 4. put_file_piece() which sends the file contents within specified byte offsets.
  remove makeflowlog generated during testing
  remove 'horrible, horrible' testing method
  New method for allpairs test.
  Create symlink to `allpairs_multicore`