Add abazel() function to envsetup.

    #export HOST_EXTRACFLAGS="-I "$T/system/kernel_headers/host_include

}

function abazel()

{

    local T="$(gettop)"

    if [ ! "$T" ]; then

        echo "Couldn't locate the top of the tree.  Try setting TOP."

        return

    fi

    case $(uname -s) in

        Darwin)

            ANDROID_BAZEL_PATH="${T}/prebuilts/bazel/darwin-x86_64/bazel"

            ANDROID_BAZELRC_PATH="${T}/build/bazel/darwin.bazelrc"

            ANDROID_BAZEL_JDK_PATH="${T}/prebuilts/jdk/jdk11/darwin-x86"

            ;;

        Linux)

            ANDROID_BAZEL_PATH="${T}/prebuilts/bazel/linux-x86_64/bazel"

            ANDROID_BAZELRC_PATH="${T}/build/bazel/linux.bazelrc"

            ANDROID_BAZEL_JDK_PATH="${T}/prebuilts/jdk/jdk11/linux-x86"

            ;;

        *)

            ANDROID_BAZEL_PATH=

            ANDROID_BAZELRC_PATH=

            ANDROID_BAZEL_JDK_PATH=

            ;;

    esac

    if [ -n "$ANDROID_BAZEL_PATH" -a -f "$ANDROID_BAZEL_PATH" ]; then

        export ANDROID_BAZEL_PATH

    else

        echo "Couldn't locate Bazel binary"

        return

    fi

    if [ -n "$ANDROID_BAZELRC_PATH" -a -f "$ANDROID_BAZELRC_PATH" ]; then

        export ANDROID_BAZELRC_PATH

    else

        echo "Couldn't locate bazelrc file for Bazel"

        return

    fi

    if [ -n "$ANDROID_BAZEL_JDK_PATH" -a -d "$ANDROID_BAZEL_JDK_PATH" ]; then

        export ANDROID_BAZEL_JDK_PATH

    else

        echo "Couldn't locate JDK to use for Bazel"

        return

    fi

    echo "WARNING: Bazel support for the Android Platform is experimental and is undergoing development."

    echo "WARNING: Currently, build stability is not guaranteed. Thank you."

    echo

    "${ANDROID_BAZEL_PATH}" --server_javabase="${ANDROID_BAZEL_JDK_PATH}" --bazelrc="${ANDROID_BAZELRC_PATH}" "$@"

}

function printconfig()

{

    local T=$(gettop)