Disable ZSTD use

It is not needed for our purposes and it fails the build on macOS
because the libzstd binaries from brew contain only x64 binaries.

Author: grendello

build-llvm.sh

@@ -43,6 +43,7 @@ function configure()
 		  -DLLVM_ENABLE_TERMINFO=OFF \
 		  -DLLVM_ENABLE_THREADS=OFF \
 		  -DLLVM_ENABLE_ZLIB=OFF \
+		  -DLLVM_ENABLE_ZSTD=OFF \
 		  -DLLVM_INCLUDE_BENCHMARKS=OFF \
 		  -DLLVM_INCLUDE_EXAMPLES=OFF \
 		  -DLLVM_INCLUDE_TESTS=OFF \