fix link error on Solaris OpenIndiana

[Bruno Haible]

On Solaris 11 OpenIndiana, the final link fails:

libtool: link: gcc -O2 -D_XOPEN_SOURCE=700 -Wall -g -O2 -o .libs/poke 
poke-poke.o poke-pk-term.o poke-pk-table.o poke-pk-repl.o poke-pk-cmd.o 
poke-pk-cmd-ios.o poke-pk-cmd-info.o poke-pk-cmd-misc.o poke-pk-cmd-help.o 
poke-pk-cmd-def.o poke-pk-cmd-vm.o poke-pk-cmd-set.o poke-pk-cmd-editor.o 
poke-pk-cmd-map.o poke-pk-ios.o poke-pk-map.o poke-pk-map-tab.o 
poke-pk-map-lex.o ../common/poke-pk-utils.o poke-pk-hserver.o  
-L/export/home/bruno/prefix32/lib ../gl/.libs/libgnu.a -lsocket 
../libpoke/.libs/libpoke.so -L/export/home/bruno/poke-1.0d/build-32/jitter/lib 
-lc -lncurses -ltermcap -lm -lgc -lreadline -lpthread 
-R/export/home/bruno/prefix32/lib
Undefined                       first referenced
 symbol                             in file
rpl_ftello                          ../libpoke/.libs/libpoke.so
ld: fatal: symbol referencing errors. No output written to .libs/poke
collect2: error: ld returned 1 exit status
*** Error code 1

The reason is that
  - ftello occurs among the gnulib modules for the program (indirectly),
  - ftello is not among the gnulib modules for libpoke,
  - but they share the same config.status and substituted variables,
    so the redirection ftello -> rpl_ftello is activated also inside libpoke,
  - libpoke/pkl_diag.c uses ftello.

Like before, here is workaround/fix.

0004-Fix-build-error-on-Solaris-11-OpenIndiana.patch
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