Fix release builds with MKARGON2=yes

This changes argon2 from a separately built library into a private
dependency of libcrypt and removes the argon2(1) utility (we already
have pwhash(1)). Giving l

Fix release builds with MKARGON2=yes

This changes argon2 from a separately built library into a private
dependency of libcrypt and removes the argon2(1) utility (we already
have pwhash(1)). Giving libcrypt more library dependencies
complicates things (e.g. libcrypt is a dependency of openssl).
pthreads support gets disabled in argon2 for similar reasons.

For testing argon2, we rely on the libcrypt test suite.

show more ...

Update LLVM to 10.0.0git (01f3a59fb3e2542fce74c768718f594d0debd0da)

added backend support for argon2 password scheme

Multicast DNS ("Bonjour") support, based on Apple's mDNSResponder.