include/my_global.h:
  move __func__ definition to my_global.h
include/my_sys.h:
  proc_info_hook
mysys/my_static.c:
  proc_info_hook
sql/mysqld.cc:
  proc_info_hook
sql/sql_class.cc:
  support thd==0 in set_thd_proc_info
sql/sql_profile.cc:
  move __func__ definition to my_global.h
sql/sql_profile.h:
  move __func__ definition to my_global.h