Fixed core dump bug when sending wrong string to AES_DECRYPT()


BitKeeper/deleted/.del-explain_log.sh~e570be5f63576fe1:
  Delete: scripts/explain_log.sh
Docs/manual.texi:
  Updated bug reporting. Added somew new changelog entries and changed some old
client/mysql.cc:
  Fixed so that --ssl and --skip-ssl works
client/mysqladmin.c:
  Fixed so that --ssl and --skip-ssl works
client/mysqlcheck.c:
  Fixed so that --ssl and --skip-ssl works
client/mysqldump.c:
  Fixed so that --ssl and --skip-ssl works
client/mysqlimport.c:
  Fixed so that --ssl and --skip-ssl works
client/mysqlshow.c:
  Fixed so that --ssl and --skip-ssl works
include/sslopt-case.h:
  Fixed so that --ssl and --skip-ssl works
mysql-test/r/func_str.result:
  Test of problem with AES_DECRYPT()
mysql-test/t/func_str.test:
  Test of problem with AES_DECRYPT()
mysys/my_aes.c:
  Fixed problem with wrong decrypt string.
scripts/mysql_explain_log.sh:
  Applied missed patch
sql/item_strfunc.cc:
  Fixed aes_encrypt() and aes_decrypt() to be safer and avoid some mallocs()
sql/net_pkg.cc:
  Return ER_UNKNOWN_ERROR instead of errocode 0 in some cases.