Remote Data access via Get() or Transport #3740
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This is a replacement for the prior WIP Remote PR (which I will delete when this is merged). This has been reformatted with the new clang-format parameters and contains a tiny bit of Norbert's campaign tweaks (the RemoteDataPath parameter). However, it can still be activated with the
DoRemoteenvironment variable (activates Get()-level remote data access) and theDoFileRemoteenvironment variable (activates transport-level remote data access). If only DoRemote is activated, the metadata is read locally and Get() operations sent to the remote server. If only DoFileRemote is activated, all file access is sent to the remote server, including metadata reads. (This is a temporary measure to test the mechanism, not a final solution.). If both are activated, metadata access happens via the remote data mechanism and data access (via Get()) is done via the remote Get() mechanism.