Re: compilation error in VPATH build

[Jose E. Marchesi]

Hi Bruno.

>> On the other hand, files that ARE packed into a tarball should not be erased
>> by "make distclean" (only by "make maintainer-clean"), and should reside in
>> srcdir, per the GNU Coding Standards
>> <https://www.gnu.org/prep/standards/html_node/Makefile-Basics.html>.
>
> Other violations of this rule also exist for
>
>   man/poke.1
>   libpoke/pkl-lex.h
>   libpoke/pkl-lex.c
>   poke/pk-map-lex.c
>   poke/pk-map-lex.h
>
> All these files are packaged in the tarball (which is good, because it
> means that the builder does not need to have 'help2man' and 'flex' installed).
> But they are currently stored in the builddir:
>
> $ ll man/poke.1 build-64/man/poke.1
> -rw-rw-r-- 1 bruno bruno 2128 Feb 20 00:37 build-64/man/poke.1
> -rw-rw-r-- 1 bruno bruno 2073 Nov 21 20:39 man/poke.1
>
> $ ll libpoke/pkl-lex.? build-64/libpoke/pkl-lex.?
> -rw-rw-r-- 1 bruno bruno 112175 Feb 20 00:34 build-64/libpoke/pkl-lex.c
> -rw-rw-r-- 1 bruno bruno  18610 Feb 20 00:34 build-64/libpoke/pkl-lex.h
> -rw-rw-r-- 1 bruno bruno 104521 Nov 21 20:39 libpoke/pkl-lex.c
> -rw-rw-r-- 1 bruno bruno  18596 Nov 21 20:39 libpoke/pkl-lex.h
> -rw-rw-r-- 1 bruno bruno  16235 Jan 25 08:57 libpoke/pkl-lex.l
>
> $ ll poke/pk-map-lex.? build-64/poke/pk-map-lex.?
> -rw-rw-r-- 1 bruno bruno 69762 Feb 20 00:37 build-64/poke/pk-map-lex.c
> -rw-rw-r-- 1 bruno bruno 18969 Feb 20 00:37 build-64/poke/pk-map-lex.h
> -rw-rw-r-- 1 bruno bruno 69602 Nov 21 20:39 poke/pk-map-lex.c
> -rw-rw-r-- 1 bruno bruno 18958 Nov 21 20:39 poke/pk-map-lex.h
> -rw-rw-r-- 1 bruno bruno  4207 Jan 25 08:57 poke/pk-map-lex.l
>
> Fixed through the two attached patches.

OK for master.
Thanks!