Mark a spec as pending on ODBC

After upgrading to the latest ODBC driver, this spec no longer
appears to work, and the error message indicates low level
driver issues, so mark it as pending.

spec/integration/prepared_statement_test.rb

@@ -251,7 +251,7 @@
     @ds.filter(:t=>@ds.ba(:$x, :timestamp)).prepare(:first, :ps_time).call(:x=>@vs[:t])[:t].should == @vs[:t]
   end
 
-  cspecify "should handle blob type", [:swift] do
+  cspecify "should handle blob type", [:swift], [:odbc] do
     @ds.filter(:file=>@ds.ba(:$x, :bytea)).prepare(:first, :ps_blob).call(:x=>@vs[:file])[:file].should == @vs[:file]
   end