Log Message:
Built a bootkit for NetBSD/aarch64

Also the package is now more explicit about LLVM. It used to invoke whatever \ 
llc(1) and opt(1) found in the $PATH when -fllvm is passed to the compiler, \ 
though it's not the default backend. Now LLVM is an explicit, optional \ 
dependency on platforms where NCG backend is available, and a mandatory \ 
dependency on others.

Note that the LLVM backend tends to produce faster code but it runs \ 
significantly slower than NCG. AArch64 support of NCG is being worked on, but it \ 
hasn't been merged to the 9.0 branch yet (or even the master branch).