add helper targets and variables
use `gunzip -c` instead of `zcat` which only supports .Z and not .gz on Mac OS X
update autogen dependencies
http://ml.nec-labs.com/download/data/mnist8m is dead, use infimnist instead
netcat is sometimes called nc
update autogen dependencies
update for VS2013 build
various type fixes
revise windows directions
Merge pull request #404 from sam-s/master

improve Mac OS X support: zcat cannot hangle *.gz
make them work on Mac OSX, by using "gunzip -c" instead of zcat
fixing ksvm type issues
fixing some more type issues
Merge pull request #407 from alekh/ksvm

Ksvm
made test_search C++ example a bit more complicated to have save/load behavior
tweaked comment
Merge pull request #405 from Jaimyoung/master

Make them work on Mac OSX, by using "gunzip -c" instead of zcat
updated search library, added notebook
added a stupid example dependency parser
added covington example