[AD] patch for the FLC reader

[David A. C. <da...@us...>]

This patch fix a problem when we want play FLI/FLC files with chunks
that has odd lengths (e.g. color chunks that changes one or three
colors).

(you can download a couple of FLC files to test it:
 http://www.davidcapello.com.ar/rec0000.flc
 http://www.davidcapello.com.ar/rec0001.flc)

From a FLI/FLC format description document written by Mike Haaland:

[...]

     The compression schemes are all byte-oriented.  If the
compressed data ends up being an odd length a single pad byte is
inserted so that the FLI_COPY's always start at an even address
for faster DMA.

[...]

.- David A. Capello - www.davidcapello.com.ar