This commit adds the 'libpinyin' library to the repo.
This library is needed by 'ibus-pinyin' and 'ibus-libpinyin' in order
to provide Chinese language input.
This library also provides Traditional Chinese (Bopomofo/ZhuYin) input.
PATCH 2: Simplified dependencies and build process per review comments
(*) Disabled cross build because some of the data generation requires
binary build with the build-system tools instead of the target system
tools and will require work to sort through the automake/autoconf project.
PATCH 3: Cleaned up long lines and simplified nocross comments
87daa40553