support for changing # of input groups
Merge branch 'master' of github.com:lisa-lab/pylearn2
start of fixed_var_descr support for sgd
more fixed_var_descr support
more fixed_var_descr support
Merge branch 'master' of github.com:lisa-lab/pylearn2
Merge pull request #252 from goodfeli/master

Support for changing # input groups
Merge branch 'master' of github.com:lisa-lab/pylearn2
correctly access on_load_batch
fixed wrong name of field access
Merge pull request #253 from goodfeli/master

make sgd support fixed_var_descr
quick and dirty windows port

d:\kit\pthreads-win32-VC-x64\ is where the pthreadVC2.lib,
pthreadVC2.dll and pthread.h reside on my system. User should be able to
specify the header file location, library name and library location via
config attributes or environment variable.