added innodb_change_buffering innodb_doublewrite and innodb_file_format attributes
add query_cache_type and actually set node["mysql"]["version"]
adding the query cache_type attribute default of 0
table_cache was removed in 5.1 in favor of table_open_cache

http://dev.mysql.com/doc/refman/5.1/en/server-system-variables.html#sysvar_table_cache
Merge pull request #11 from rackspace-cookbooks/more-attributes

added innodb_change_buffering innodb_doublewrite and innodb_file_format ...