New comment by q66 on void-packages repository

https://github.com/void-linux/void-packages/pull/23498#issuecomment-656665494

Comment:
that's strange, i only see atomic ever used if TR1 is on https://github.com/alembic/alembic/search?q=atomic&unscoped_q=atomic

but if that's the case, leave that in place, yeah - it'll be necessary for 32-bit powerpc and mips in the same way