We should also add GDBvn.texi in ANNOTATE_DOC_BUILD_INCLUDES, shouldn't we?
Is the attached patch OK?
Actually, it is gdb-cfg.texi that includes GDBvn.texi, not annotate.texinfo.
So a better fix is to add that dependency to gdb-cfg.texi, no? It's kind
of borderline, since one can create gdb-cfg.texi without GDBvn.texi.
However, on the other hand, it makes it simpler for the other documents
that depend on gdb-cfg.texi, as they do not have to know that gdb-cfg.texi
depends on GDBvn.texi (and possibly other files too).