Also handle GlobalVariables. Fixes Recursion/RecursiveClingInstances.C.
Also handle GlobalVariables. Fixes Recursion/RecursiveClingInstances.C.

root-mirror/cling,marsupial/cling,root-mirror/cling,karies/cling,karies/cling,root-mirror/cling,marsupial/cling,karies/cling,marsupial/cling,root-mirror/cling,karies/cling,root-mirror/cling,root-mirror/cling,karies/cling,marsupial/cling,marsupial/cling,marsupial/cling,karies/cling