Update SQLite3 Drivers

Update bundled drivers to version 1.2.4.

vendor/plugins/sqlite3-ruby/test/tc_errors.rb

@@ -0,0 +1,21 @@
+$:.unshift "../lib"
+
+require 'sqlite3/errors'
+require 'test/unit'
+require 'mocha'
+
+class TC_Errors < Test::Unit::TestCase
+  (1..26).each do |code|
+    define_method( "test_error_code_%02d" % code ) do
+      db = stub('database', :errmsg => 'message')
+      begin
+        SQLite3::Error.check( code, db )
+      rescue SQLite3::Exception => e
+        assert_instance_of SQLite3::EXCEPTIONS[code], e
+        assert_equal code, e.code
+        assert_equal code, e.class.code
+        assert_equal "message", e.message
+      end
+    end
+  end
+end