only use important part of Received header. Fixed status output.
Add GDBM support.Add mode switch for standalone and libsylph app.
Made the license BSD-like one.
implemented debug mode switch.
added built-in libsylph, and use it from textcontent-filter.c.
also parse specific headers.
modified interface of XFilter result. Added API to open/close bayes db.
added a function to read message files.