message: devtools: Accomodate block-style copyright blocks
  Without this, `copyright_header.py report . verbose` reports:
  1 with unexpected copyright holder names
  ./build_msvc/libsecp256k1_config.h
diff: @@ -85,7 +85,7 @@ ANY_COPYRIGHT_STYLE_OR_YEAR_STYLE = ("%s %s" % (ANY_COPYRIGHT_STYLE,
  ANY_COPYRIGHT_COMPILED = re.compile(ANY_COPYRIGHT_STYLE_OR_YEAR_STYLE)
  def compile_copyright_regex(copyright_style, year_style, name):
  - return re.compile('%s %s,? %s\n' % (copyright_style, year_style, name))
  + return re.compile(r'%s %s,? %s( +\*)?\n' % (copyright_style, year_style, name))
  EXPECTED_HOLDER_NAMES = [
  r"Satoshi Nakamoto",
  