Build pymca locally

[mrakitin]

Request from CHX - @yugangzhang always installs pymca manually on all the collection machines at CHX. We better need to build it locally and deploy within a CHX metapackage.

Links:

• https://github.com/vasole/pymca/tree/master/conda.recipe
• https://sourceforge.net/p/pymca/code/ci/master/tree/
• https://anaconda.org/n-vigano/pymca