innobase/include/row0vers.h:
  row_vers_build_for_consistent_read():
  Add parameters offsets and offset_heap
  in order to avoid recomputing the offsets in the caller.
innobase/row/row0sel.c:
  Eliminate some rec_get_offsets() calls.
innobase/row/row0vers.c:
  row_vers_build_for_consistent_read():
  Add parameters offsets and offset_heap
  in order to avoid recomputing the offsets in the caller.