#161 Code formatter does not indent multiline function directives

[Thomas Mueller]

function RegisterClipboardFormatW(lpszFormat: PWideChar): UINT; stdcall;
  external user32 Name 'RegisterClipboardFormatW';

gets incorrectly formatted as

function RegisterClipboardFormatW(lpszFormat: PWideChar): UINT; stdcall;
external user32 Name 'RegisterClipboardFormatW';

The second line should be indented.

And test

function RegisterClipboardFormatW(lpszFormat: PWideChar): UINT;
  stdcall;
  external user32
  Name 'RegisterClipboardFormatW';

too.

[Thomas Mueller]

Partial fix for the special case of the 'forward' directive in revision #4505

[Thomas Mueller]

fixed in revision #4536 by pushing 'external' on the stack until the following semicolon.