IndexedSet: allowing count to overflow 26 bits (64M); counts are 32 bits but w/ 6 bits for bdi/fpc encoding
BaseDedup.cpp: fixing rc histo print to have mask in top 6 bits of uint64_t
IndexedSet.hpp: fixed count overflow logic
IndexedSet: fixing rc histo for overflowed counts
IndexedSet.cpp: debug overflowed rc value
IndexedSet.cpp: debug overflowed rc value
IndexedSet.cpp: debug overflowed rc value