options/posix: Implement tdestroy #3509

Job	Run time
Compile sysdeps (dripos)	2m 6s
Build mlibc (x86_64, mlibc)	3m 17s
Compile sysdeps (lemon)	2m 17s
Build mlibc (x86_64, mlibc-static)	2m 50s
Compile sysdeps (aero)	2m 7s
Build mlibc (x86_64, mlibc-shared)	2m 46s
Build mlibc (x86_64, mlibc-ansi-only)	2m 51s
Build mlibc (x86_64, mlibc-headers-only)	1m 50s
Compile sysdeps (ironclad)	2m 5s
Build mlibc (riscv64, mlibc)	3m 16s
Compile sysdeps (lyre)	2m 15s
Build mlibc (riscv64, mlibc-static)	4m 1s
Compile sysdeps (keyronex)	2m 14s
Build mlibc (riscv64, mlibc-shared)	2m 46s
Compile sysdeps (managarm)	2m 19s
Build mlibc (riscv64, mlibc-ansi-only)	2m 48s
Build mlibc (riscv64, mlibc-headers-only)	2m 10s
Build mlibc (aarch64, mlibc)	3m 37s
Build mlibc (aarch64, mlibc-static)	3m 2s
Build mlibc (aarch64, mlibc-shared)	2m 59s
Build mlibc (aarch64, mlibc-ansi-only)	2m 51s
Build mlibc (aarch64, mlibc-headers-only)	1m 45s
Build mlibc (x86, mlibc)	3m 32s
Build mlibc (x86, mlibc-static)	3m 3s
Build mlibc (x86, mlibc-shared)	3m 4s
Build mlibc (x86, mlibc-ansi-only)	2m 46s
Build mlibc (x86, mlibc-headers-only)	2m 8s
	1h 12m 45s

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