killing gd_mf in favor of mf
added precomputed_prediction bit to example
initialized active_simulation to false, removed extra gd setup
moved MF setup after save/laod
fixed indexing of constant feature in audit
(currently broken) reduction-friendly mf
cleaned up mf.cc
removing special parse_args cases for matrix factorization, debugging
switching branches
debugging
constant now multipled by weights_per_problem
mf merge complete, nn test acting up
added classifier-based csoaa back in
stupid typo
need notion of emptyline more globally, so moved; fixed accumulation/parallel for csoaa; default holdout off for multiline examples until we can fix it
added note and warning about initial regressor
temporary fix for parallel
refixed john's non-thread-safe code (with TODO to make it faster later), also fixed ezexamples implementation
cosmetic fix: warning message and comment
unused var