Build: updating the RequiredExecutionEnviorment to JavaSE-1.7, moving build to 3.7.2 for databrowser gef dependency.
Build: updating the RequiredExecutionEnviorment to JavaSE-1.7, moving build to 3.7.2 for databrowser gef dependency.

Signed-off-by: Kunal Shroff <a3b6c3928a745b45becc135941c7c4a0f4436957@bnl.gov>

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