GNU/Linux and Solaris that support unlocked I/O. The basic idea
is to use the gnlib unlocked-io module, and to prefer putc and
puts to printf when either will work (since the latter doesn't
come in an unlocked flavor).
* bootstrap (gnulib_modules): Add unlocked-io.
* data/c.m4 (yysymprint): Prefer puts and putc to printf.
* data/glr.c (YYFPUTC, YYFPUTS, YYDPUTS): New macros.
Prefer them to YYFPRINTF and YYDPRINTF if either will do,
and similarly for puts and putc and printf.
* data/yacc.c: Likewise.
* lib/bitset.c (bitset_print): Likewise.
* lib/bitset.h [USE_UNLOCKED_IO]: Include unlocked-io.h.
* lib/bitsetv.c (bitsetv_dump, debug-bitsetv): Prefer putc and puts
to printf.
* lib/lbitset.c (debug_lbitset): Likewise.
* src/closure.c (print_firsts, print_fderives): Likewise.
* src/gram.c (grammar_dump): Likewise.
* src/lalr.c (look_ahead_tokens_print): Likewise.
* src/output.c (escaped_output): Likewise.
(user_actions_output): Coalesce two printfs.
* src/parse-gram.h (%printer): Prefer putc and puts to printf.
* src/reduce.c (reduce_print): Likewise.
* src/state.c (state_rule_look_ahead_tokens_print): Likewise.
* src/system.h: Include unlocked-io.h rathe than stdio.h.
* lib/bitset.c (bitset_print): Don't assume size_t can be printed
with %d format.
* lib/ebitset.c (min, max): Undef before defining.
* lib/vbitset.c (min, max): Likewise.
* lib/subpipe.c (create_subpipe): Save local variables in case
vfork clobbers them.
* tests/synclines.at (AT_SYNCLINES_COMPILE): Add support for the
error message syntax used by gcc-4.0.
bitset_andn_or_cmp_, bitset_bytes, bitset_copy_, bitset_count_,
bitset_create, bitset_dump, bitset_first, bitset_free, bitset_init,
bitset_last, bitset_next, bitset_obstack_alloc, bitset_obstack_free,
bitset_only_set_p, bitset_op4_cmp, bitset_or_and_, bitset_or_and_cmp_,
bitset_prev, bitset_print, bitset_release_memory, bitset_toggle_,
bitset_type_choose, bitset_type_get, bitset_type_name_get,
debug_bitset): Use function prototypes; this removes the need for
declaring static functions simply to provide their prototypes.
Use size_t, not unsigned int, to count bytes.
(bitset_print): Use proper printf format for bitset types.
(bitset_next, bitset_prev, bitset_first, bitset_last):
Return BITSET_BINDEX_MAX (not -1) for no value,
since we now return the bitset_bindex type (not int).
