Add some 64 bit aliases #3523

Job	Run time
Compile sysdeps (dripos)	2m 27s
Build mlibc (x86_64, mlibc)	3m 32s
Compile sysdeps (lemon)	2m 26s
Build mlibc (x86_64, mlibc-static)	2m 50s
Compile sysdeps (aero)	2m 26s
Compile sysdeps (ironclad)	2m 31s
Build mlibc (x86_64, mlibc-shared)	2m 53s
Compile sysdeps (lyre)	2m 24s
Compile sysdeps (keyronex)	2m 26s
Compile sysdeps (managarm)	2m 40s
Build mlibc (x86_64, mlibc-ansi-only)	2m 52s
Build mlibc (x86_64, mlibc-headers-only)	1m 56s
Build mlibc (riscv64, mlibc)	3m 33s
Build mlibc (riscv64, mlibc-static)	4m 21s
Build mlibc (riscv64, mlibc-shared)	3m 5s
Build mlibc (riscv64, mlibc-ansi-only)	3m 0s
Build mlibc (riscv64, mlibc-headers-only)	2m 7s
Build mlibc (aarch64, mlibc)	3m 54s
Build mlibc (aarch64, mlibc-static)	3m 22s
Build mlibc (aarch64, mlibc-shared)	3m 16s
Build mlibc (aarch64, mlibc-ansi-only)	3m 6s
Build mlibc (aarch64, mlibc-headers-only)	2m 8s
Build mlibc (x86, mlibc)	3m 34s
Build mlibc (x86, mlibc-static)	2m 56s
Build mlibc (x86, mlibc-shared)	2m 58s
Build mlibc (x86, mlibc-ansi-only)	2m 46s
Build mlibc (x86, mlibc-headers-only)	1m 54s
	1h 17m 23s

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