fix docbook output
1. support other than english
2. fix broken example link id
3. fix incomplete TOC : no Classe etc.
4. add brief description for Functions etc.
5. Comply with REPEAT_BRIEF
6. Do not output duplicated contents when detailed descripton is missing.
7. set table colwidth for Param/RetVal
Merge branch 'master' of https://github.com/zmhuang/doxygen