Cleaned up memory allocation so that in all cases of malloc failure the...

Cleaned up memory allocation so that in all cases of malloc failure the application ends execution. 
Default values for auto-generate have been made available for adjusting. Key test for rights now works with either type of keys. 


client/client_priv.h:
  Adding options for execution defines
client/mysqlslap.c:
  Cleaning up memory allocation so that malloc failures die. 
  
  Fixed execution so that defaults are not adjustable.
mysql-test/t/mysqlslap.test:
  Adding a test for defaults.

client/client_priv.h

@@ -60,6 +60,9 @@ enum options_client
   OPT_SLAP_AUTO_GENERATE_SQL_LOAD_TYPE, OPT_SLAP_AUTO_GENERATE_WRITE_NUM,
   OPT_SLAP_AUTO_GENERATE_ADD_AUTO,
   OPT_SLAP_AUTO_GENERATE_GUID_PRIMARY,
+  OPT_SLAP_AUTO_GENERATE_EXECUTE_QUERIES,
+  OPT_SLAP_AUTO_GENERATE_UNIQUE_WRITE_NUM,
+  OPT_SLAP_AUTO_GENERATE_UNIQUE_QUERY_NUM,
   OPT_MYSQL_REPLACE_INTO, OPT_BASE64_OUTPUT, OPT_SERVER_ID,
   OPT_FIX_TABLE_NAMES, OPT_FIX_DB_NAMES, OPT_SSL_VERIFY_SERVER_CERT,
   OPT_DEBUG_INFO, OPT_COLUMN_TYPES

mysql-test/t/mysqlslap.test

@@ -28,3 +28,7 @@
 --exec $MYSQL_SLAP --silent --concurrency=5 --iterations=1 --number-int-cols=2 --number-char-cols=3 --auto-generate-sql --auto-generate-sql-add-autoincrement --auto-generate-sql-load-type=mixed
 
 --exec $MYSQL_SLAP --silent --concurrency=5 --iterations=1 --number-int-cols=2 --number-char-cols=3 --auto-generate-sql --auto-generate-sql-guid-primary --auto-generate-sql-load-type=update
+
+--exec $MYSQL_SLAP --silent --concurrency=5 --iterations=1 --number-int-cols=2 --number-char-cols=3 --auto-generate-sql --auto-generate-sql-guid-primary --auto-generate-sql-load-type=update --auto-generate-sql-execute-number=5
+
+--exec $MYSQL_SLAP --silent --concurrency=5 --iterations=1 --number-int-cols=2 --number-char-cols=3 --auto-generate-sql --auto-generate-sql-guid-primary --auto-generate-sql-load-type=key --auto-generate-sql-execute-number=5