message: bazel: add autoconf to dep list for gperftools compilation
  Updated bazel README with autoconf dependency note for gperftool compilation
  Risk Level: low - docs only
  Testing: Tested install on Ubuntu 18.04 & MacOS
diff: @@ -35,6 +35,7 @@ for how to update or override dependencies.
  cmake \
  clang-format-7 \
  automake \
  + autoconf \
  make \
  ninja-build \
  curl \
  @@ -49,7 +50,7 @@ for how to update or override dependencies.
  On macOS, you'll need to install several dependencies. This can be accomplished via [Homebrew](https://brew.sh/):
  ```
  - brew install coreutils wget cmake libtool go bazel automake ninja llvm@7
  + brew install coreutils wget cmake libtool go bazel automake ninja llvm@7 autoconf
  ```
  _notes_: `coreutils` is used for `realpath`, `gmd5sum` and `gsha256sum`; `llvm@7` is used for `clang-format`
  