Add syscall stub for kqueue1(2)

This rides previous libc minor bump.

Feedback and OK guenther@

Add PROTO_NORMAL() declarations for the remaining syscalls, to avoid
future, inadvertant PLT entries. Move the __getcwd and __realpath
declarations to hidden/{stdlib,unistd}.h to consolidate and rem

Add PROTO_NORMAL() declarations for the remaining syscalls, to avoid
future, inadvertant PLT entries. Move the __getcwd and __realpath
declarations to hidden/{stdlib,unistd}.h to consolidate and remove
duplication.

ok tb@ otto@ deraadt@

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