SCHEMA-118. Cleans up KijiTableLayout API.

Signed-off-by: Milo <milo@wibidata.com>
SCHEMA-147. Hide OperatorRowFilter.

Signed-off-by: Juliet Hougland <juliet@wibidata.com>
SCHEMA-119. Remove TableLayoutSerializer.

Signed-off-by: Christophe Taton <taton@wibidata.com>
SCHEMA-153. Adds KijiTable.getRegions() method.

Signed-off-by: Christophe Taton <taton@wibidata.com>
SCHEMA-175. kiji shell script should be able to run kiji-mapreduce tools.

This commit modifies the kiji script so that if KIJI_MR_HOME is set, jars in
$KIJI_MR_HOME/lib are added to the classpath of the kiji script. This allows
KijiToolLauncher to launch tools provided in kiji-mapreduce. Help messages are
updated to notify the user that they should set this environment variable if
they wish to use kiji-mapreduce tools.

Signed-off-by: Milo <milo@wibidata.com>