[GR-59298] Incorrect compressed oop calculation for hubs in gdb-debughelpers. #9948
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The gdb-debughelpers script (GR-48384) needs to recompute compressed oops from their address for some typecasts in gdb. The computation, updated in GR-58500 works if the number of alignment bits is equal to the number of reserved bits, but is incorrect if those numbers are different.