Restrict newlib signal macros for Asylo
Restrict newlib signal macros for Asylo

PiperOrigin-RevId: 299489210
Change-Id: I0bff352e2ce6c58c4342d5be64d8314780bf4f6b

google/asylo,google/asylo,google/asylo,google/asylo,google/asylo,google/asylo