work on normal computing

[Remi-C]

Fresh pull request from main repository.
Applied the work of colincsl
Corrected it to no more use at function
workaround a Cython bug? can't use regular
T *getptrN(pcl::PointCloud *pc, size_t i)
, even if in htoery with templates it should be okay. Add to duplicate code.

It compiles, I don't know if it works due to local trouble with pcl.

[nzjrs]

Please paste the output of 'make test'

[Remi-C]

Hey,
I will do it on monday. For the moment I can't use "import pcl", in a python terminal.
It gives some errors about not finding the _pcl module.
This is quit a handicap ;-)
I must admit I am far beyond my littleknowledge of python and git, let alone templated Cpp and Cython.
Cheers,
Rémi-C

[Remi-C]

Ok,
I can only "import pcl" as root or postgres user.
Even as root or postgres, the "make test" seems faulty.
I have to run "nosetest tests/test.py" to really run the test.

I corrected the test code and the function code to make it work.
Now it passes the tests. (some other functions doesn't pass, but that's not the point here).

It seems I have to create another pull request ...

Cheers,
Rémi-C