Update vendored Sqlite3-ruby to 1.3.0

Also, some tweaks to Maruku.

vendor/plugins/sqlite3-ruby/ext/sqlite3/sqlite3.c

@@ -0,0 +1,33 @@
+#include <sqlite3_ruby.h>
+
+VALUE mSqlite3;
+VALUE cSqlite3Blob;
+
+static VALUE libversion(VALUE UNUSED(klass))
+{
+  return INT2NUM(sqlite3_libversion_number());
+}
+
+void Init_sqlite3_native()
+{
+  /*
+   * SQLite3 is a wrapper around the popular database
+   * sqlite[http://sqlite.org].
+   *
+   * For an example of usage, see SQLite3::Database.
+   */
+  mSqlite3     = rb_define_module("SQLite3");
+
+  /* A class for differentiating between strings and blobs, when binding them
+   * into statements.
+   */
+  cSqlite3Blob = rb_define_class_under(mSqlite3, "Blob", rb_cString);
+
+  /* Initialize the sqlite3 library */
+  sqlite3_initialize();
+
+  init_sqlite3_database();
+  init_sqlite3_statement();
+
+  rb_define_singleton_method(mSqlite3, "libversion", libversion, 0);
+}