make update-po@master stops at pg_upgrade

I'm not sure if it fits -hackers, but seems better than -translators.

I find it annoying that make update-po stops at pg_upgrade on master.
The cause is that a file is renamed from relfilenode.c to
relfilenumber.c so just fixing the name works. (attached first).

On the other hand, basically, every nls.mk contain all *.c files in the
tool's directory plus some in other directories with some exceptions:

a) nls.mk of pg_dump and psql contain some *.h files but they don't
contain a translatable string.

b) nls.mk of ecpglib is missing some files that contain translatable
strings. (adding theses files doesn't change the result of make
update-po, but I'll send another mail for this issue.)

c) nls.mk of pg_waldump, psql, libpq and preproc excludes some *.c
files which don't contain a translatable string.

At least for (a) above, removing them from nls.mk is rather good. For
(b), adding them is also good. For (c), I think few extra files
doesn't make difference.

I wonder if we can use $(wildcard *.c) instead of explicitly
enumerating every *.c file in the directory then maintaining the
list. Since backend does that way, I think we can do that the same way
also for the tools. Attached second does that except for tools that
have only one *.c. The patch doesn't make a difference in the result
of make update-po.

Either will do for me but at least I'd like (a) applied.

regards.

--
Kyotaro Horiguchi
NTT Open Source Software Center