Fix ugly bug in bytes

Was harmless until we actually started to use the state when
decoupling randomkit's stream from torch's.
Decouple randomkit's stream from torch

This will allow us to better recouple them with the new
thread-safe state structure in torch's RNG.
Use totem instead of torch.Tester

For dev purpose only, until totem is published.
Tests pass. Could do with an api tidy.
Don't need special method for a generator
Makes rockspec 0-0 point to v0.0 branch
Add rockspect for 0-1
Merge branch 'torch_RNG_threadsafety' into v0.1

This is compatible with Torch from commits
https://github.com/torch/torch7/commit/cfaebfb94fe831154d39714cc3788d3d3022f9ef
onwards.
Avoided a warning about reading an undefined var.
Merge pull request #42 from fidlej/topic_no_undefined_read

Avoided a warning about reading an undefined var.
Used a local var for fun_cdef.
Merge pull request #43 from fidlej/topic_local_var

Used a local var for fun_cdef.
change wrapC to conform with new torch ffi
ffi load needs to remain
Merge pull request #45 from alvinlschua/master

change wrapC to conform with new torch ffi
Merge branch 'master' of github.com:jucor/torch-randomkit