Make module names reflect skins better

Rename orbwfproc.c to wfproclauncher.c to reflect it's purpose as a basic
reusable launcher module for wfproc_main. Added a bunch of comments
describing the mechanism by which skins get loaded.

Rename the skin implementation module to reflect that it contains
multiple skins.
WIP: dbpolarize parameter file
WIP: tons of channel metadata recordkeeping

Prepping to actually start outputting a parameter file for orbwfproc.
Renamed a bunch of functions to match naming scheme.