WL#5154 Remove deprecated 4.1 features

A set of program options and variables was deprecated in
MySQL 5.1, and is hereby removed.



client/mysql.cc:
  --no-auto-rehash (-A)  is no longer deprecated
  --no-named-commands (-g) is now removed
  --skip-line-numbers (-L) is no longer deprecated
  --set-variable (-O) is now removed
  --no-pager is now removed
client/mysqlbinlog.cc:
  --position is now removed (use --start-position)
  -j is now equivalent with --start-position
client/mysqldump.c:
  --first-slave is now removed
  --no-set-names (-N) is now removed
  --set-variable (-O) is now removed
mysql-test/include/default_mysqld.cnf:
  default-character-set is removed as an option
  character-set-server is equivalent.
mysql-test/t/bug47671-master.opt:
  default-character-set option is removed
  character-set-server is equivalent
mysql-test/t/ctype_latin1_de-master.opt:
  default-character-set option is removed
  character-set-server is equivalent
mysql-test/t/ctype_ucs2_def-master.opt:
  default-collation is removed
  collation-server is equicalent
scripts/mysqld_multi.sh:
  --config-file has been superseded by
  --defaults-extra-file
sql/mysql_priv.h:
  Removed the version number in the deprecation
  warning text, as decided by ServerPT.
sql/mysqld.cc:
  --default-character-set (-C) is removed
  --default-collation is removed
  --log-long-format (-0) is removed
  --safe-show-database is removed
  --set-variable (-O) is removed
sql/sql_yacc.yy:
  The FRAC_SECOND keyword is removed
sql/sys_vars.cc:
  The sql_log_update system variable is removed

scripts/mysqld_multi.sh

@@ -59,18 +59,6 @@ sub main
     push @defaults_options, (shift @ARGV);
   }
 
-  # Handle deprecated --config-file option: convert to --defaults-extra-file
-  foreach my $arg (@ARGV)
-  {
-    if ($arg =~ m/^--config-file=(.*)/)
-    {
-      # Put it at the beginning of the list, so it has lower precedence
-      # than a correct --defaults-extra-file option
-
-      unshift @defaults_options, "--defaults-extra-file=$1";
-    }
-  }
-
   foreach (@defaults_options)
   {
     $_ = quote_shell_word($_);
@@ -79,11 +67,6 @@ sub main
   # Add [mysqld_multi] options to front of @ARGV, ready for GetOptions()
   unshift @ARGV, defaults_for_group('mysqld_multi');
 
-  # The --config-file option can be ignored; if passed on the command
-  # line, it's already handled; if specified in the configuration file,
-  # it's redundant and not useful
-  @ARGV= grep { not /^--config-file=/ } @ARGV;
-
   # We've already handled --no-defaults, --defaults-file, etc.
   if (!GetOptions("help", "example", "version", "mysqld=s", "mysqladmin=s",
                   "user=s", "password=s", "log=s", "no-log",
@@ -740,8 +723,8 @@ from both [mysqld_multi] and [mysqld#], a group that is tried to be
 used, $my_progname will abort with an error.
 
 $my_progname will search for groups named [mysqld#] from my.cnf (or
-the given --config-file=...), where '#' can be any positive integer
-starting from 1. These groups should be the same as the regular
+the given --defaults-extra-file=...), where '#' can be any positive 
+integer starting from 1. These groups should be the same as the regular
 [mysqld] group, but with those port, socket and any other options
 that are to be used with each separate mysqld process. The number
 in the group name has another function; it can be used for starting,
@@ -767,7 +750,6 @@ These options must be given before any others:
                    standard system-wide and user-specific files
 Using:  @{[join ' ', @defaults_options]}
 
---config-file=...  Deprecated, please use --defaults-extra-file instead
 --example          Give an example of a config file with extra information.
 --help             Print this help and exit.
 --log=...          Log file. Full path to and the name for the log file. NOTE: