Fix memory leak introduced in the fix for lp:1196020. oops. Caused by not freeing found cursor in find_vertices() function.

Fix one memory leak (caused by not freeing found cursor in find_vertices) (introduced in fix for #1196020, doh)

Updated regression test to force repeat of 1134355. A 'fix' in sql_table, causes assertion in ha_oqgraph

iRenamed no_search to '' and finished making all tests self-consistent and match somewhat to http://openquery.com/graph/doc and added bug references to tests