Boostrap as an option

[djw8605]

The R bootstrap could be useful in the condor.local service as well as the bosco. It should be made a separate option to grid.init, but should be enabled by default on bosco.direct submission.

[djw8605]

The user should be able to specify, possibly in the grid.init function, whether to use the bootstrap script or not. This would be useful in the case of using the condor.local submission.

User Interface

The user would specify the grid.init funciton like:

> grid.init(service="condor.local", localTmpDir="tmp", bootstrap=True)

In this case, the job submission will be made to the universe = vanilla, but the bootstrap script will be used in order to setup the R environment.

[djw8605]

Backend changes

The files grid.batchFunction.R and grid.makeSshAndCondorFile would need to be modified to include the options of specifying the bootstrap script. Further, the remotePackages from #3 and the Rurl from #4 options will need to be honored.

[djw8605]

This has been completed in 022dc19