Changes from 2.0 to 2.0.1:

    Make "tag-release.sh" script executable
    Bump version number prior to 2.0.1 release
    distro.sh: prepare plaintext version of man page
    Update buildtools submodule 6656431..1cd84ad
    distro.sh: prepare release notes
    distro.sh: use temp directory to avoid cluttering up BUILT_PRODUCTS_DIR
    distro.sh: include submodules in source archive
    distro.sh: prepare source archive
    Second phase of "distro.sh" (zip up package file)
    Clarify comment
    Add "Distro" target
    distro.sh: implement tag checking
    Add script references to Xcode project
    Add schema for "distro.sh" script
    Add tag-release.sh script
    Enforce minimum system version in installer package
    Bump version number post-release

buildtools: Changes from wincent-strings-util-2.0 to wincent-strings-util-2.0.1:

    ReleaseNotes.sh: handle submodules ahead of annotated tags