Fix for MDEV-5547: Bad error message when moving very old .frm files to MariaDB 5.5.

mysql_upgrade --help now also prints out --default options and variable values.
mysql_upgrade now prints permission errors.
mysql_upgrade doesn't print some non essential info if --silent is used.
Added handler error message about incompatible versions
Fixed that mysqlbug and mysql_install_db have the executable flag set.
Removed executable flag for some non executable files.
Changed in mysql_install_db askmonty.org to mariadb.com.
Ensured that all client executables prints --default options the same way.
Allow REPAIR ... USE_FRM for old .frm files if the are still compatible.
Extended shown error for storage engine messages.


client/mysql.cc:
  print_defaults() should be first (as in all other programs)
client/mysql_upgrade.c:
  --help now also prints out --default options and variable values
  Print out error if wrong permissions
  Don't print info if --silent
client/mysqladmin.cc:
  print_defaults() should be first (as in all other programs)
client/mysqlbinlog.cc:
  Added print_defaults() to --help
client/mysqlcheck.c:
  Added empty line in --help
client/mysqlimport.c:
  Added empty line in --help
client/mysqlshow.c:
  Made --help compatible
client/mysqlslap.c:
  Made --help compatible
client/mysqltest.cc:
  Added print_defaults() to --help
include/handler_ername.h:
  Added handler error message
include/my_base.h:
  Added handler error message
mysql-test/r/mysql_upgrade.result:
  Updated results
mysql-test/r/repair.result:
  Added test case for better error messages
mysql-test/std_data/host_old.MYD:
  Added test case for better error messages
mysql-test/std_data/host_old.MYI:
  Added test case for better error messages
mysql-test/std_data/host_old.frm:
  Added test case for better error messages
mysql-test/t/repair.test:
  Added test case for better error messages
mysys/my_handler_errors.h:
  Added handler error message
scripts/CMakeLists.txt:
  Fixed that mysqlbug and mysql_install_db have the executable flag set
scripts/mysql_install_db.sh:
  askmonty.org -> mariadb.com
sql/ha_partition.cc:
  Sometimes table_type() can be called for errors even if partition didn't manage to open any files
sql/handler.cc:
  Write clear text for not handled, but defined error messages.
sql/share/errmsg-utf8.txt:
  Extended shown error for storage engine messages
sql/sql_admin.cc:
  Allow REPAIR ... USE_FRM for old .frm files if the are still compatible
storage/myisam/ha_myisam.cc:
  Use new error message

scripts/mysql_install_db.sh

@@ -90,7 +90,7 @@ link_to_help()
 {
   echo
   echo "The latest information about mysql_install_db is available at"
-  echo "http://kb.askmonty.org/v/installing-system-tables-mysql_install_db."
+  echo "https://mariadb.com/kb/en/installing-system-tables-mysql_install_db"
 }
 
 parse_arg()
@@ -492,7 +492,7 @@ then
   echo "databases and anonymous user created by default.  This is"
   echo "strongly recommended for production servers."
   echo
-  echo "See the MariaDB Knowledgebase at http://kb.askmonty.org or the"
+  echo "See the MariaDB Knowledgebase at http://mariadb.com/kb or the"
   echo "MySQL manual for more instructions."
 
   if test "$in_rpm" -eq 0
@@ -512,9 +512,9 @@ then
   echo "You can find additional information about the MySQL part at:"
   echo "http://dev.mysql.com"
   echo "Support MariaDB development by buying support/new features from"
-  echo "Monty Program Ab. You can contact us about this at sales@montyprogram.com".
+  echo "SkySQL Ab. You can contact us about this at sales@skysql.com".
   echo "Alternatively consider joining our community based development effort:"
-  echo "http://kb.askmonty.org/en/contributing-to-the-mariadb-project/"
+  echo "http://mariadb.com/kb/en/contributing-to-the-mariadb-project/"
   echo
 fi