MFC r293679:

MFC r293679:
  Change the type of newsize argument in the smbfs_smb_setfsize() function
  from int to int64.
  MSDN says that SMB_SET_FILE_END_OF_FILE_INFO uses signed 64-bit integer
  to specify offset, but since smbfs_smb_setfsize() has used plain int,
  a value was truncated in case when offset was larger than 2G.
  	https://msdn.microsoft.com/en-us/library/ff469975.aspx

  In particular, now `truncate -s 10G` will work correctly on the mounted
  SMB share.