"Running ANALYZE TABLE on bdb table inside a transaction hangs server thread"

1. added new status HA_ADMIN_REJECT and processing of it in mysql_admin_table
2. got ha_berkley::analyze to return HA_ADMIN_REJECT if there are any 
 transactions with the table.. 


mysql-test/r/bdb-crash.result:
  added test for bug #2342 
  "Running ANALYZE TABLE on bdb table inside a transaction hangs server thread"
mysql-test/t/bdb-crash.test:
  added test for bug #2342 
  "Running ANALYZE TABLE on bdb table inside a transaction hangs server thread"
sql/ha_berkeley.cc:
  fixed bug #2342 
  "Running ANALYZE TABLE on bdb table inside a transaction hangs server thread"
  
  we have to return new status "HA_ADMIN_REJECT" for ha_berkley::analyze 
  if there are any transaction for this table 
  so as bdb documentation says:
  "The DB->stat method cannot be transaction protected"
sql/handler.h:
  added new status of table info "HA_ADMIN_REJECT"
  
  We have to return this status for bdb tables which 
  have any active transactions so as bdb-documentation says:
  "The DB->stat method cannot be transaction-protected"
sql/sql_table.cc:
  added processing of the new status HA_ADMIN_REJECT in mysql_admin_table
  (reason to add this status is explained in comment 
  for commit on sql/handler.h)