take out the rb gc for now, until I can merge in Lourens' stuff, and also add a test for multiple queries

ext/mysql.c

@@ -190,8 +190,10 @@ static VALUE mysqlres2obj(MYSQL_RES* res)
     resp->res = res;
     resp->freed = Qfalse;
     rb_obj_call_init(obj, 0, NULL);
+    /* disabled until it can be reviewed further--rely on the normal GC for now.
     if (++store_result_count > GC_STORE_RESULT_LIMIT)
 	rb_gc();
+    */
     return obj;
 }
 

test/test_many_requests.rb

@@ -0,0 +1,11 @@
+# shows the effect of using .all_hashes instead of looping on each hash 
+# run it by substiting in a 'long' [many row] query for the query variable and toggling use_all_hashes here at the top
+# note that we load all the rows first, then run .all_hashes on the result [to see more easily the effect of all hashes]
+# on my machine and a 200_000 row table, it took 3.38s versus 3.65s
+require 'rubygems'
+require 'mysqlplus'
+a = Mysql.real_connect('localhost','root')
+100.times { a.query("select sleep(0)") }
+print "pass"
+
+