lookup splash added.
lookup-enable-splash added.
utility functions for char-tables and string are added.
source code re-organized.
pinyin filter is now using the one in lookup-text.el
a bug that cause error when `code-start' is nil is fixed.
ndweb-with-url fixed to ensure temp buffer is killed when error is signaled.
lookup-set-url-links and charsets specs are fixed.