Revert the patch that put log debug code behind UNIV_LOG_DEBUG
log0log.ic, log0recv.c, log0log.c, log0log.h:
  Revert 1.1730.18.1 about UNIV_LOG_DEBUG: debug code is often needed in debugging the production version


innobase/log/log0log.c:
  Revert 1.1730.18.1 about UNIV_LOG_DEBUG: debug code is often needed in debugging the production version
innobase/log/log0recv.c:
  Revert 1.1730.18.1 about UNIV_LOG_DEBUG: debug code is often needed in debugging the production version
innobase/include/log0log.ic:
  Revert 1.1730.18.1 about UNIV_LOG_DEBUG: debug code is often needed in debugging the production version
innobase/include/log0log.h:
  Revert the patch that put log debug code behind UNIV_LOG_DEBUG