[regex] updated patches for bugs 501-504

[Paolo Bonzini]

I've put on Bugzilla updated patches.  This time I've built them from 
the glibc repository, rather than on top of each other.

http://sources.redhat.com/bugzilla/attachment.cgi?id=273&action=view
http://sources.redhat.com/bugzilla/attachment.cgi?id=274&action=view
http://sources.redhat.com/bugzilla/attachment.cgi?id=276&action=view
http://sources.redhat.com/bugzilla/attachment.cgi?id=277&action=view

Paolo