WL#1284 (warnings about --skip-name-resolve)
Now MySQL will issue warnings during startup about entries in
grant tables with hostnames that require resolve, and after
GRANT commands with that kind of hostnames.


include/mysqld_error.h:
  errno added
sql/share/czech/errmsg.txt:
  error message added
sql/share/danish/errmsg.txt:
  error message added
sql/share/dutch/errmsg.txt:
  error message added
sql/share/english/errmsg.txt:
  error message added
sql/share/estonian/errmsg.txt:
  error message added
sql/share/french/errmsg.txt:
  error message added
sql/share/german/errmsg.txt:
  error message added
sql/share/greek/errmsg.txt:
  error message added
sql/share/hungarian/errmsg.txt:
  error message added
sql/share/italian/errmsg.txt:
  error message added
sql/share/japanese/errmsg.txt:
  error message added
sql/share/korean/errmsg.txt:
  error message added
sql/share/norwegian-ny/errmsg.txt:
  error message added
sql/share/norwegian/errmsg.txt:
  error message added
sql/share/polish/errmsg.txt:
  error message added
sql/share/portuguese/errmsg.txt:
  error message added
sql/share/romanian/errmsg.txt:
  error message added
sql/share/russian/errmsg.txt:
  error message added
sql/share/serbian/errmsg.txt:
  error message added
sql/share/slovak/errmsg.txt:
  error message added
sql/share/spanish/errmsg.txt:
  error message added
sql/share/swedish/errmsg.txt:
  error message added
sql/share/ukrainian/errmsg.txt:
  error message added
sql/sql_acl.cc:
  Checks added to detect entries with symbolic hostnames in grant tables
sql/sql_acl.h:
  interface added
sql/sql_parse.cc:
  Check added to the GRANT command to warn about 
  symbolic hostname & --skip-name-resolve