Add custom compilation parameters for CUDA modules

Here is the syntax to use with `pip`:
	pip install --install-option='-D_TIME' menpo

Parameters need to start by '-D' to be considered as a module parameter.
They will be directly transmitted to the compiler during the compilation.
Add custom compilation parameters for C/C++ modules
Redefine macros for time measurements based on -D_TIME parameter
Merge branch 'cuda_fix_compile' into cuda_hog
Measure times of CUDA-code and native-C (-D_TIME required)
Merge branch 'cuda_hog' into cuda_hog_fullcuda

Conflicts:
	menpo/image/feature/cu/HOG.cu