make use tostring for printing the key.
Merge branch 'master' of github.com:andresy/torch
add indexing operators
make sure to handle 1D indexing properly.
do not forget to free the temporary size allocation.
add documentation
correct the heading style in the doc for index operations.
CMul should resize the gradInput into the same shape as input.
do not use pushudata on a tensor that is retrieved with checkudata.
make the dimension index int.
implement cuda versions for index operators
indexing operators work with CUDA, well they give out errors.
Merge branch 'master' into windows