[PATCH] Provide a SECURITY.md for glibc.

[Siddhesh Poyarekar]

On 2023-03-27 09:18, Siddhesh Poyarekar wrote:
> On 2023-02-23 14:15, Carlos O'Donell via Libc-alpha wrote:
>> Github itself can be configured with a security policy around this topic:
>> https://docs.github.com/en/code-security/getting-started/adding-a-security-policy-to-your-repository
> 
> Maybe this should be noted in the git commit log for posterity.

Also, I wonder if it makes sense to move all of that content off the 
wiki and into the SECURITY.md.

Thanks,
Sid