[Bug web/55237] Linkify r123456 in comments to point to SVN

[LpSolit at netscape dot net]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55237

--- Comment #14 from Frédéric Buclin <LpSolit at netscape dot net> ---
On the other hand, you are free to not click on a register name which is
linkified.