Import the following changes from libc:

Import the following changes from libc:

2006-06-02  Jakub Jelinek  <jakub@redhat.com>

* posix/regex_internal.c (re_string_skip_chars): If no character has
been converted at all, set *last_wc to WEOF.  If mbrtowc failed, set wc
to the byte which couldn't be converted.
(re_string_reconstruct): Don't clear valid_raw_len before calling
re_string_skip_chars.  If wc is WEOF after re_string_skip_chars, set
tip_context using re_string_context_at.

2006-05-02  Ulrich Drepper  <drepper@redhat.com>

* posix/regex.h: g++ still cannot handled [restrict].

2006-04-21  Ulrich Drepper  <drepper@redhat.com>

* posix/regex.h: Remove special handling for VMS.