Imported Upstream version 0.4.0
Drop upstream merged patch debian/patches/negative-frequency.patch
Modify for libchewing new platform independent format

- Remove --datadir in rules
- Change libchewing3-data arch to all
- Update debian/libchewing3-data.install
Enable testing
Update debian/tests/build for better debug message
Remove Makefile.in in dh_clean
Update debian/libchewing3.symbols for new symbols
Update debian/copyright to copyright-format 1.0
Update debian/changelog