New fields in CHARSET_INFO for more nice SHOW CHARACTER SET
Dynamic charsets are now handled in faster way
SHOW CHARACTER SET now displays not only compiled charsets but dynamic charsets too


include/m_ctype.h:
  Renamed constant
  New fields in CHARSET_INFO
include/my_sys.h:
  Constant have been moved to m_ctype.h
libmysqld/lib_sql.cc:
  Renamed constant
mysys/charset.c:
  Dynamic charsets are now handled in new way to speedup things
mysys/test_charset.c:
  Renamed constant
sql/mysqld.cc:
  Renamed constant
sql/sql_show.cc:
  SHOW CHARACTER SET now displays not only compiled charsets but dynamic charsets too
strings/ctype.c:
  New fields in CHARSET_INFO