added THTensor_(renorm) prototype
added THTensor_(renorm)
cwrapped torch.renorm
renorm only renormalizes rows with greater norms than maxnorm
started renorm unit tests
renorm works (debugged and unit tested)
Merge branch 'master' of github.com:torch/torch7
Added renorm doc to maths.md
Added dropout ref. and equivalent code for renorm
Used double to hold the 'p' for bernoulli() and geometric() instead of 'real'.
Merge pull request #43 from fidlej/topic_non_float_bernoulli

Used double to hold the 'p' for bernoulli() and geometric()
unit test uses same function as in doc
Merge branch 'master' of github.com:nicholas-leonard/torch7
Merge pull request #41 from GeorgOstrovski/master

removed flaky test
renorm does not accept vectors
fixed argchecks
optimized power of 1 and 2
Merge pull request #42 from nicholas-leonard/master

torch.renorm
changed precison threshold for conv3 test

The previous threshold was insufficient and the test occasionally failed. I ran it a large number of times and the actual error reached ~ 3x1e-10, so I propose 4*1e-10 as the new safer threshold.
Merge pull request #44 from GeorgOstrovski/patch-1

changed precison threshold for conv3 test