[Bug sanitizer/89010] Update URLs in libsanitizer/README.gcc

[jg at jguk dot org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89010

--- Comment #1 from Jonny Grant <jg at jguk dot org> ---
Created attachment 45505
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45505&action=edit
README.gcc.patch

2019-01-23  Jonny Grant  <j...@jguk.org>

        PR 89010
        * libsanitizer/README.gcc: Update to current https URLs