CRUNCH-434: outputConf options ignored on some key Targets
CRUNCH-437: Fix Crunch-on-Spark duplicate value aggregation
CRUNCH-435: Cleaner controls for configuring and initializing the
SparkContext and runtime Configuration.
CRUNCH-433 Add support for AvroKeyValue file

Add support for reading AvroKeyValue files created using
org.apache.avro.mapreduce.AvroJob. Also add explicit methods in
the From class for reading an Avro key/value file as a PTable.

Signed-off-by: Josh Wills <jwills@apache.org>
CRUNCH-439: classifier for avro-mapred
CRUNCH-442 Auto-configure Avro specific classloader

Automatically configure the class loader to use when using an
Avro specific or reflection PType. This prevents
ClassCastException when locally materializing specific or reflect
records when Avro is in the lib directory of Hadoop.