remove the need for a link file when starting the frontend_server in resident mode

[michaelRichards99]

In order to solve a race condition when concurrent Resident Frontend Server processes are trying to start up and both point to the same info file, the code currently creates a link file. Link files are exclusive, so only 1 process is able to create it while the other gets an exception and terminates. A Link is used because File does not currently have support for creating in exclusive mode.

This issue will add the ability for a file to be created with an exclusive flag. When this issue is completed, the Link file can be dropped from the frontend_server.