Mark the stack as noexec in asm files

[octurion]

A missing .note.GNU-stack section implicitly marks the stack as PROT_EXEC:

warning: ProbeCtl.o: missing .note.GNU-stack section implies executable stack
NOTE: This behaviour is deprecated and will be removed in a future version of the linker

AFAICT, Xpedite doesn't rely on an executable stack, so we can explicitly mark it as noexec.

EDIT: Covered by dco/alexandros-tasos.md

[Mani-D]

@octurion Thank you for spotting the issue and we are glad to receive the PR.
Since this is the first time you are contributing, we need the PR to include a DCO document.
Can you please take a look at the instructions here?

Please let me know if you need any details / clarification.

Regards
Mani

[octurion]

Please let me know if you need any details / clarification.

Just a quick question: Given that the DCO document is going to be public, is it okay if I e.g. obfuscate my email address in my DCO so that it can't be easily scraped?

[Mani-D]

Please let me know if you need any details / clarification.

Just a quick question: Given that the DCO document is going to be public, is it okay if I e.g. obfuscate my email address in my DCO so that it can't be easily scraped?

yes, of course.

[octurion]

DCO added 👍

[Mani-D]

DCO added 👍

Excellent. Thank you !