Update vendored Sqlite3-ruby to 1.3.0

Also, some tweaks to Maruku.

vendor/plugins/sqlite3-ruby/ext/sqlite3/extconf.rb

@@ -0,0 +1,39 @@
+ENV['RC_ARCHS'] = '' if RUBY_PLATFORM =~ /darwin/
+
+require 'mkmf'
+
+# :stopdoc:
+
+RbConfig::MAKEFILE_CONFIG['CC'] = ENV['CC'] if ENV['CC']
+
+sqlite = dir_config('sqlite3', ['/usr/local', '/opt/local', '/usr'])
+
+if RUBY_PLATFORM =~ /mswin/
+  $CFLAGS << ' -W3'
+else
+  $CFLAGS << ' -O3 -Wall -Wcast-qual -Wwrite-strings -Wconversion' <<
+             ' -Wmissing-noreturn -Winline'
+end
+
+def asplode missing
+  if RUBY_PLATFORM =~ /mswin/
+    abort "#{missing} is missing. Install SQLite3 from " +
+          "http://www.sqlite.org/ first."
+  else
+    abort "#{missing} is missing. Try 'port install sqlite3 +universal' " +
+          "or 'yum install sqlite3-devel'"
+  end
+end
+
+asplode('sqlite3.h')  unless find_header  'sqlite3.h'
+asplode('sqlite3') unless find_library 'sqlite3', 'sqlite3_libversion_number'
+
+# Functions defined in 1.9 but not 1.8
+have_func('rb_proc_arity')
+
+# These functions may not be defined
+have_func('sqlite3_column_database_name')
+have_func('sqlite3_enable_load_extension')
+have_func('sqlite3_load_extension')
+
+create_makefile('sqlite3/sqlite3_native')