Fix snapshot1.js for WT

2014-11-04T23:42:07.979+0000 I QUERY    Error: boost::filesystem::copy_file: The process cannot access the file because another process has locked a portion of the file: "C:\data\db/repl_snapshot1-1-master\WiredTiger.lock", "C:\data\db/repl_snapshot1-1-slave\WiredTiger.lock"

    at C:\data\mci\shell\src\jstests\repl\snapshot1.js:16:1 at C:\data\mci\shell\src\jstests\repl\snapshot1.js:16

failed to load: C:\data\mci\shell\src\jstests\repl\snapshot1.js