Updates Cassandra version to 1.2.3.
Uses download.sh.
Adds a script to get URL to download.
Adds castro.url pattern.
Adds hadoop.url pattern.
Uses get_url.sh to get URL to download.
Adds Gora info.
Adds download_archive.sh script to download an archive file.
Adds SHA256Hash.java, and adds hadoop-core.jar to pom.xml.
Adds FixedLengthBytesWritable.java.