For developers, please add new entry for your plans.

* Follow the idea from kcwu to adapt some routines of libtabe, and
   seek for better way to share resources.
  a) support same phrase in different phones.
* Support platform independent binary data.
  a) Support data versioning.
  b) Explicit data struct size.
  c) Remove text data support.
* Provide public API to manipulate/query system and user dict.
* Rebuild data after code changes to tools.
