[CMD] TYPE: Rewrite the command so as to fix some of its behaviour.

- Display the names of the files being TYPEd only if more than one file
  has been specified on the command-line, or if a file specification
  (with wildcards) is present (even just for one).
  These names are displayed on STDERR while the files are TYPEd on
  STDOUT, therefore allowing concatenating files by just redirecting
  STDOUT to a destination, without corrupting it with the displayed file
  names. Also, add a /N option to force not displaying these file names.

- When file specifications (with wildcards) are being processed, silently
  ignore any directories matching them. If no corresponding files have
  been found, display a file-not-found error.

- When explicitly directory names are specified, don't do any special
  treatment; the CreateFile() call will fail and return the appropriate
  error.

- Fix the returned errorlevel values.

See https://ss64.com/nt/type.html for more information.

Fixes some cmd_winetests.

- When reading from a file, retrieve its original size so that
  we can stop reading it once we are beyond its original ending.
  This allows avoiding an infinite read loop in case the output of
  the file is redirected back to it.

  Fixes CORE-17208

- Move the FileGetString() helper to the only file where it is
  actually used.

base/shell/cmd/misc.c

@@ -510,45 +510,6 @@ BOOL IsExistingDirectory (LPCTSTR pszPath)
 }
 
 
-BOOL FileGetString (HANDLE hFile, LPTSTR lpBuffer, INT nBufferLength)
-{
-    LPSTR lpString;
-    DWORD  dwRead;
-    INT len = 0;
-#ifdef _UNICODE
-    lpString = cmd_alloc(nBufferLength);
-#else
-    lpString = lpBuffer;
-#endif
-
-    if (ReadFile(hFile, lpString, nBufferLength - 1, &dwRead, NULL))
-    {
-        /* break at new line*/
-        CHAR *end = memchr(lpString, '\n', dwRead);
-        len = dwRead;
-        if (end)
-        {
-            len = (INT)(end - lpString) + 1;
-            SetFilePointer(hFile, len - dwRead, NULL, FILE_CURRENT);
-        }
-    }
-
-    if (!len)
-    {
-#ifdef _UNICODE
-        cmd_free(lpString);
-#endif
-        return FALSE;
-    }
-
-    lpString[len++] = '\0';
-#ifdef _UNICODE
-    MultiByteToWideChar(OutputCodePage, 0, lpString, -1, lpBuffer, len);
-    cmd_free(lpString);
-#endif
-    return TRUE;
-}
-
 // See r874
 BOOL __stdcall PagePrompt(PCON_PAGER Pager, DWORD Done, DWORD Total)
 {