[OctDev] openmpi_ext

[c. <car...@gm...>]

Hi,

It seems from a few recent posts on the list that openmpi_ext is getting some
attention lately, so I decided to have a look at its current status.

It seems that although it received very little maintainace in the last three years
it is still in very good shape and is still useful.

I went through the code and did a little cleanup, fixed some trivial bugs and removed
a lot of code duplication making use of templates and macros where possible.

Does anyone object if I apply the attached patch and prepare a new release?

c.