WL#1600 (Warn if result is truncatet due to max_allowed_packet)

include/mysqld_error.h:
  Warning added
mysql-test/r/func_str.result:
  test result fixed
mysql-test/r/packet.result:
  test resut fixed
sql/item_geofunc.cc:
  warning issued
sql/item_strfunc.cc:
  warning issued
sql/share/czech/errmsg.txt:
  Warning added
sql/share/danish/errmsg.txt:
  Warning added
sql/share/dutch/errmsg.txt:
  Warning added
sql/share/english/errmsg.txt:
  Warning added
sql/share/estonian/errmsg.txt:
  Warning added
sql/share/french/errmsg.txt:
  Warning added
sql/share/german/errmsg.txt:
  Warning added
sql/share/greek/errmsg.txt:
  Warning added
sql/share/hungarian/errmsg.txt:
  Warning added
sql/share/italian/errmsg.txt:
  Warning added
sql/share/japanese/errmsg.txt:
  Warning added
sql/share/korean/errmsg.txt:
  Warning added
sql/share/norwegian-ny/errmsg.txt:
  Warning added
sql/share/norwegian/errmsg.txt:
  Warning added
sql/share/polish/errmsg.txt:
  Warning added
sql/share/portuguese/errmsg.txt:
  Warning added
sql/share/romanian/errmsg.txt:
  Warning added
sql/share/russian/errmsg.txt:
  Warning added
sql/share/serbian/errmsg.txt:
  Warning added
sql/share/slovak/errmsg.txt:
  Warning added
sql/share/spanish/errmsg.txt:
  Warning added
sql/share/swedish/errmsg.txt:
  Warning added
sql/share/ukrainian/errmsg.txt:
  Warning added

mysql-test/r/packet.result

@@ -8,6 +8,8 @@ len
 select repeat('a',2000);
 repeat('a',2000)
 NULL
+Warnings:
+Warning	1300	Data truncated by function 'repeat' do to max_allowed_packet
 select @@net_buffer_length, @@max_allowed_packet;
 @@net_buffer_length	@@max_allowed_packet
 1024	1024