Kepler

These actors do different things. Kepler's was poorly named; I renamed ArrayAccumulator to Array To String, added the filter, etc at r30699.

Kepler ArrayAccumulator
---- * This actor reads an array and writes a string with all the elements. The * characters separating the entries can be specified as a parameter.

Example output in SDF w/ 2 iterations:
onetwothree
onetwothree

Ptolemy ArrayAccumulate
---
An actor that accumulates input arrays into a growing array that
includes the contents of all input arrays. Upon firing, this actor reads
an input array, appends it to the accumulating array, and outputs
the new array. The length of the output array grows by the size
of the input array on each firing.

Example output in SDF w/ 2 iterations: {"one", "two", "three"} {"one", "two", "three", "one", "two", "three"}

Original Bugzilla ID was 5662