Docstring fixes/additions.
Merge branch 'staging' of git://www.github.com/pyne/pyne into staging
basic origen22.xslibs function
added test for origen22.xslibs
working tape9 generation cli
removed impossible nuclide from origen sets
mcnp.py clarification.
Merge branch 'staging' of git://www.github.com/pyne/pyne into staging
changed enrichment to enrichment10, much better for develop
Merge pull request #304 from gidden/enr-less

changed enrichment to enrichment10, much better for develop
changed num_density_to_mesh to take the readlines() from alara output so all processing can be done in memory with system calls rather than writing output to a file then rereading it.
added duck typing support, now files or lists
Merge pull request #301 from katyhuff/gsoc

GSoC... merging my own pr... with permission.
resorted to popping with most of the previous structure intact. ready for a review, @scopatz.
Merge pull request #293 from scopatz/t9

Cross Section Generation for TAPE9
Merge branch 'alara_inmem' of https://github.com/gidden/pyne into gidden-alara_inmem
added two new projects and fixed a few small syntax things in exp_data.
Fixed errors in alara module function.
Merge pull request #311 from elliottbiondo/alara_mix

Fixed errors in alara module functions.
added another project to gsoc.