redox: more sysconf constants #4728
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jackpot51
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| _PC_SYMLINK_MAX | ||
| _PC_SYNC_IO | ||
| _POSIX_VDISABLE | ||
| _SC_ARG_MAX |
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(backport rust-lang#4728) (cherry picked from commit 4d939b0)
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Description
This PR is a part of effort to introduce uutils
nprocwhich requires constants_SC_NPROCESSORS_CONFand_SC_NPROCESSORS_ONLN. I see that there's other sysconf constants that's not updated here so I add them too.Sources
SC_NPROCESSORS_*implementationChecklist
libc-test/semverhave been updated*LASTor*MAXareincluded (see #3131)
cd libc-test && cargo test --target mytarget);especially relevant for platforms that may not be checked in CI