Add support for locales with zero collation rules.

While there is code to handle 'nrules == 0' in various locations
within posix/fnmatch_loop.c, posix/regcomp.c and posix/regexec.c,
these conditionals do not work.  The only collation with zero
rules in effect today is the builtin C/POSIX locale which is
built by hand, and despite have zero rules it has a collseqmb
and collseqwc tables stored in the locale data. These tables are
simple identity tables which are not actually required and could
be removed at a later date after this change.  The changes are in
order to prepare for C.UTF-8 which has zero rules and has no
collation sequence tables (multibyte or widechar).

No regressions on x86_64 or i686.

0 files changed, 0 insertions, 0 deletions