Updated engine to also handle create options
Secondary indexes can now be generated (aka the test PeterZ thoughts!)


client/client_priv.h:
  Option for generating secondary indexes
client/mysqlslap.c:
  Option for generating secondary index operations. 
  Cleaned up memory allocation that was wasteful.
  Engine options are now possible
  Correctly report test type.
mysql-test/t/mysqlslap.test:
  Additional test for secondary indexes
sql/authors.h:
  Updated for Patrick