Fix problem with MyISAM and rows of length 65517-65520


Docs/manual.texi:
  Changelog
include/raid.h:
  Ensure that libmysqlclient doesn't use raid
libmysql/Makefile.am:
  Ensure that libmysqlclient doesn't use raid
libmysql_r/Makefile.am:
  Ensure that libmysqlclient doesn't use raid
myisam/mi_check.c:
  Fix problem with rows of length 65517-65520
myisam/mi_dynrec.c:
  Fix problem with rows of length 65517-65520
mysql-test/r/myisam.result:
  Test for myisam tables with problematic row lengths
mysql-test/t/myisam.test:
  Test for myisam tables with problematic row lengths
sql/log_event.cc:
  Portability fix
strings/ctype-euc_kr.c:
  Portability fix
strings/ctype-sjis.c:
  Portability fix