KIJIMR-127. HFileKeyValue.FastComparator should be final

issue: https://jira.kiji.org/browse/KIJIMR-127
review: https://review.kiji.org/r/452
KIJIMR-118. Small improvement to AvroBulkImporter API

issue: https://jira.kiji.org/browse/KIJIMR-118
review: https://review.kiji.org/r/451
KIJIMR-113. Improve KijiMapReduceJobBuilder javadocs

issue: https://jira.kiji.org/browse/KIJIMR-113
review: https://review.kiji.org/r/450
KIJIMR-133. KijiJobTool.getJobInputTable() should be final.

issue: https://jira.kiji.org/browse/KIJIMR-133
review: https://review.kiji.org/r/453