[BZ #1302]

[BZ #1302]

2005-09-06  Paul Eggert  <eggert@cs.ucla.edu>
            Ulrich Drepper  <drepper@redhat.com>

	[BZ #1302]
	Change bitset word type from unsigned int to unsigned long int,
	as this has better performance on typical 64-bit hosts.  Change
	bitset type name to bitset_t.
	* posix/regcomp.c (build_equiv_class, build_charclass):
	(build_range_exp, build_collating_symbol):
	Prefer bitset_t to re_bitset_ptr_t in prototypes, when the actual
	argument is a bitset.  This is merely a style issue, but it makes
	it clearer that an entire array is expected.
	(re_compile_fastmap_iter, init_dfa, init_word_char, optimize_subexps,
	lower_subexp): Adjust for new bitset_t definition.
	(lower_subexp, parse_bracket_exp, built_charclass_op): Likewise.
	* posix/regex_internal.h (bitset_set, bitset_clear, bitset_contain,
	bitset_not, bitset_merge, bitset_set_all, bitset_mask): Likewise.
	* posix/regexec.c (check_dst_limits_calc_pos_1,
	check_subexp_matching_top, build_trtable, group_nodes_into_DFAstates):
	Likewise.
	* posix/regcomp.c (utf8_sb_map): Don't assume initializer
	== 0xffffffff.
	* posix/regex_internal.h (BITSET_WORD_BITS): Renamed from UINT_BITS.
	All uses changed.
	(BITSET_WORDS): Renamed from BITSET_UINTS.  All uses changed.
	(bitset_word_t): New type, replacing 'unsigned int' for bitset uses.
	All uses changed.
	(BITSET_WORD_MAX): New macro.
	(bitset_set, bitset_clear, bitset_contain, bitset_empty,
	(bitset_set_all, bitset_copy):  Adjust for bitset_t change.
	(bitset_empty, bitset_copy):
	Prefer sizeof (bitset_t) to multiplying it out ourselves.
	(bitset_not_merge): Remove; unused.
	(bitset_contain): Return bool, not unsigned int with one bit on.
	All callers changed.
	* posix/regexec.c (build_trtable): Don't assume bitset_t has no
	stricter alignment than re_node_set; do this by defining a new
	internal type struct dests_alloc and using it to allocate memory.