innobase/buf/buf0buf.c:
  Remove buf_print() and buf_validate() unless #ifdef UNIV_DEBUG
innobase/buf/buf0lru.c:
  Remove buf_LRU_print() and buf_LRU_validate() unless #ifdef UNIV_DEBUG
innobase/include/buf0buf.h:
  Remove buf_print() and buf_validate() unless #ifdef UNIV_DEBUG
innobase/include/buf0lru.h:
  Remove buf_LRU_print() and buf_LRU_validate() unless #ifdef UNIV_DEBUG
innobase/include/rem0rec.h:
  rec_offs_comp(): Correct the comment about return value.