Opening up channelizer to have different sampling rates out. This first pass produces the correct output for oversampling_rate = 1.
Merging trondeau/pfb r11249:11581 into trunk. This adds a few polyphase filterbank implementations that do (integer) decimation, (integer) interpolation, arbitrary resampling, and channelizing. gnuradio-example/python/pfb includes a number of different examples of how to use these blocks....