MFC libstand catch-up: r305116,306534,306538,306552,306638

r305116: recvtftp() is broken for large files, report file size
r306534: cd9660_open should check for padding
r306538: cstyle fix of cd9660_open in libstand
r306552: Fix remaining cstyle issues in libstand/cd9660.c
r306638: Fix remaining bugs in libstand/cd9660.c reported by Bruce Evans.

PR: 200500