AVRO-1198. Java: Improve error message for malformed data.

git-svn-id: https://svn.apache.org/repos/asf/avro/trunk@1445325 13f79535-47bb-0310-9956-ffa450edef68
AVRO-1250. Add a command-line tool to concatenate data files.  Contributed by Nick White.

git-svn-id: https://svn.apache.org/repos/asf/avro/trunk@1445416 13f79535-47bb-0310-9956-ffa450edef68
AVRO-1243. Java: Add support for bzip2 file compression and translate Hadoop job compression options.  Contributed by Ted Malaska.

git-svn-id: https://svn.apache.org/repos/asf/avro/trunk@1445426 13f79535-47bb-0310-9956-ffa450edef68
AVRO-1249. Java: Fix DataFileWriter#close() to not throw an exception when called twice.  Contributed by E. Sammer.

git-svn-id: https://svn.apache.org/repos/asf/avro/trunk@1445427 13f79535-47bb-0310-9956-ffa450edef68
Merge remote-tracking branch 'upstream/trunk' into trunk