Fix words tacked on the end of a sentence.
Fix use of wrong macro.
Add first version of MRG for gpuarray (with tests).
Change GPUA_mrg over to use GpuKernelBase.  (I couldn't get it to work otherwise).
Remove useless import of NVCC_compiler
Added usecases for scan tutorial
Merge branch 'master' of git://github.com/Theano/Theano into scan
Merge branch 'master' of git://github.com/Theano/Theano into scan
Adding test for scan and comments in the doc.
Merge branch 'master' of git://github.com/Theano/Theano into scan
Correction of the tutorial code.
Correction of the tutorial.
Copy files from the cuda to the gpuarray folder
Modify parent class of GpuImages2Neibs
Added methods c_headers() and c_compiler() to GpuImages2Neibs
Convert x->nd to PyGpuArray_NDIM(x) in op GpuImages2Neibs
Convert CudaNdarray_HOST_DIMS(x) to PyGpuArray_DIMS(x) in op GpuImages2Neibs
Convert CudaNdarray_HOST_DIMSSTRIDES(x) to PyGpuArray_STRIDES(x) in op GpuImages2Neibs
Convert CudaNdarray_DEV_DATA(x) to PyGpuArray_DATA(x) in op GpuImages2Neibs
Convert output creation to use pygpu_empty()