[In Progress] cleanup perl frameworks installation scripts, see #966

Per #966, this PR is an attempt to clean up the Perl frameworks' installation scripts. Please do not merge yet.
This is also a hard-coded dependency on installation to `~/FrameworkBenchmarks`, but there is a different fix here because it's not inside a call to subprocess and therefore we don't have super easy access to the environment variables. Instead, replace `"server unix:" + home + "/FrameworkBenchmarks"` with `"server unix:" + args.fwroot` (the args now provides the fwroot environment variable, it's identical to the `$FWROOT` I referenced elsewhere