Build: Disable external libraries for with-batteries build

* build/unix/release-with-batteries.sh: When configuring LLVM/Clang,
  disable features that require non-included libraries (libedit,
  libxml2, zlib, zstd).

build/unix/release-with-batteries.sh

@@ -91,6 +91,10 @@ fi
        -DLLVM_ENABLE_PROJECTS="llvm;clang;lld" \
        ${RT_OPTS} \
        -DLLVM_ENABLE_TERMINFO=OFF \
+       -DLLVM_ENABLE_LIBEDIT=OFF \
+       -DLLVM_ENABLE_LIBXML2=OFF \
+       -DLLVM_ENABLE_ZLIB=OFF \
+       -DLLVM_ENABLE_ZSTD=OFF \
        -DLLVM_INSTALL_TOOLCHAIN_ONLY=ON \
        -DLLVM_BUILD_TOOLS=OFF \
        -DLLVM_BUILD_UTILS=OFF \
@@ -101,6 +105,7 @@ fi
        -DLLVM_TOOL_LLVM_SPECIAL_CASE_LIST_FUZZER_BUILD=OFF \
        -DLLVM_TOOL_LLVM_YAML_NUMERIC_PARSER_FUZZER_BUILD=OFF \
        -DLLVM_INCLUDE_TESTS=OFF \
+       -DCLANG_ENABLE_LIBXML2:BOOL=OFF \
        -DCLANG_ENABLE_STATIC_ANALYZER=OFF \
        -DCLANG_ENABLE_ARCMT=OFF \
        -DCLANG_INCLUDE_DOCS=OFF \