cdec model training software reorganization

[Chris Dyer]

Hello cdec-users & friends,

This is just an announcement that I've done a bit of cleanup this
afternoon to the discriminative training software that is included
with cdec. In short: if you use MERT, DTrain, PRO, Rampion, CRF
training, or fast_align, the software you depend on is now located in
some other place, and you will probably need to update your scripts
next time you update to the latest software.

A summary of the changes:

The discriminative training software is now found in subfolders of training/:
training/dpmert
training/pro
training/crf
training/dtrain
training/mira
training/rampion
training/minrisk

The fast_align tool
(http://www.cdec-decoder.org/guide/fast_align.html) is now located in
word-aligner/fast_align.

Except for the recent changes to the command line interfaces of PRO
and MERT, the software should work as it did before. A tutorial is
available here:
http://www.cdec-decoder.org/guide/tutorial.html

I've tested these changes, but it is possible that I have broken
something, so let me know if you notice anything amiss. Finally, my
apologies for the further inconvenience. This is necessary to get cdec
into a state so that it is less work for me to maintain and for new
users to begin working with.

-Chris