Update vendored Sqlite3-ruby to 1.3.0

Also, some tweaks to Maruku.

vendor/plugins/sqlite3-ruby/ext/sqlite3/sqlite3_ruby.h

@@ -0,0 +1,43 @@
+#ifndef SQLITE3_RUBY
+#define SQLITE3_RUBY
+
+#include <ruby.h>
+
+#ifdef UNUSED
+#elif defined(__GNUC__)
+# define UNUSED(x) UNUSED_ ## x __attribute__((unused))
+#elif defined(__LCLINT__)
+# define UNUSED(x) /*@unused@*/ x
+#else
+# define UNUSED(x) x
+#endif
+
+#ifndef RBIGNUM_LEN
+#define RBIGNUM_LEN(x) RBIGNUM(x)->len
+#endif
+
+#ifdef HAVE_RUBY_ENCODING_H
+#include <ruby/encoding.h>
+
+#define UTF8_P(_obj) (rb_enc_get_index(_obj) == rb_utf8_encindex())
+#define UTF16_LE_P(_obj) (rb_enc_get_index(_obj) == rb_enc_find_index("UTF-16LE"))
+#define SQLITE3_UTF8_STR_NEW2(_obj) \
+    (rb_enc_associate_index(rb_str_new2(_obj), rb_utf8_encindex()))
+
+#else
+
+#define SQLITE3_UTF8_STR_NEW2(_obj) (rb_str_new2(_obj))
+
+#endif
+
+
+#include <sqlite3.h>
+
+extern VALUE mSqlite3;
+extern VALUE cSqlite3Blob;
+
+#include <database.h>
+#include <statement.h>
+#include <exception.h>
+
+#endif