madlib/madlib — pull request #263 by geeg (2012-10-26 00:17:59+00:00)
Title: K-means: Fix parameter k to be of type integer

instead of small int

JIRA: MADLIB-697
Fixed kmeans seeding functions and closest_columns to allow number
of centroids k to be of type integer. Also added in parameter
checks to ensure k is within a valid range.