[sci-chemistry/nMOLDYN] Add to overlay

Package-Manager: portage-2.2.0_alpha179
[sci-chemistry/nMOLDYN] Update deps

Package-Manager: portage-2.2.0_alpha179
Mangling of the sources of sci-chemistry/freeon reduced, both for 2012.05.03, and for 9999.
media-gfx/librecad: Cleanup and apply patch from bug #473388

Package-Manager: portage-2.2.01.22013-prefix
RepoMan-Options: --force