Recent changes to regex.c break bootstrapping

[Luc Teirlinck]

After bootstrapping failed due to an undefined reference to xalloc, I
made the obvious correction to xmalloc and installed in CVS, but after
that bootstrapping still fails with:

regex.o: In function `extend_range_table_work_area':
/home/teirllm/emacscvsdir/emacs/lib-src/../src/regex.c:2069: undefined
reference to `xrealloc'
/home/teirllm/emacscvsdir/emacs/lib-src/../src/regex.c:2072: undefined
reference to `xmalloc'
regex.o: In function `regcomp':
/home/teirllm/emacscvsdir/emacs/lib-src/../src/regex.c:6295: undefined
reference to `xmalloc'
/home/teirllm/emacscvsdir/emacs/lib-src/../src/regex.c:6301: undefined
reference to `xmalloc'
collect2: ld returned 1 exit status
make[3]: *** [etags] Error 1
make[3]: Leaving directory `/home/teirllm/emacscvsdir/emacs/lib-src'
make[2]: *** [lib-src] Error 2
make[2]: Leaving directory `/home/teirllm/emacscvsdir/emacs'
make[1]: *** [bootstrap-build] Error 2
make[1]: Leaving directory `/home/teirllm/emacscvsdir/emacs'
make: *** [bootstrap] Error 2

lisp.h is, at least conditionally, already included in regex.c

Sincerely,

Luc.