FP.m: fixed bug where haplotypes weren't output

also added code to load ADMIX state from files
provided on command line.

Also added code to output the finite model's
cluster assignments so that this can be used
to initialize ADMIX's MCMC. (no VB for
HDP yet .... )
Debugged init from file

- should have checked if we init from file and if so, no smc step
- missed adding new clusters to the list of cluster sets.
- other minor bugs.