Add read support for four more common cpio variants:  * little-endian old-style binary cpio archives  * big-endian old-style binary cpio archives  * SVR4 portable archives without CRC  * SVR4 portable archives with CRC
Add read support for four more common cpio variants:
 * little-endian old-style binary cpio archives
 * big-endian old-style binary cpio archives
 * SVR4 portable archives without CRC
 * SVR4 portable archives with CRC

Note that I don't yet verify the CRC for the last one, and I'm
not quite certain I'm correctly parsing device numbers.

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase