done in previous patches.

There is an error in the Sun CC compiler that treats parameters that
differ in only qualifier as different, even though this is not
allowed by the standard (ISO/IEC 14882:2003, Section 13.1).


sql/log_event.cc:
  Removing const qualifier since it causes linker error.
sql/log_event.h:
  Restoring time_t instead of my_time_t since it causes warnings
  elsewhere.  Renaming parameters to functions since they hide
  member variable (which causes warnings on Sun CC).
sql/rpl_record.cc:
  Removing const qualifier since it causes linker error.
sql/rpl_rli.cc:
  Restoring time_t instead of my_time_t since it causes warnings
  elsewhere. Removing const qualifier since it causes linker error.
sql/rpl_rli.h:
  Restoring time_t instead of my_time_t since it causes warnings
  elsewhere. Removing const qualifier since it causes linker error.