scons: do not look for vfsqlpk3, make diff easier

[illwieckz]

• vfsqlpk3 was removed, so scons does not have to build it and don't fail anymore.
• when I was maintaining offline unvanquished branch I got so much pain each time I rebased on master because of stupid merge conflict since git knows well how to merge line addition/deletion but not to merge addition/deletion within the same line… setting each gamepack names on its own line will save hours of manual stupid merge solve to people wanting to add games in the future.
• I also added a comma on another list because python allows to put comma on last element and that's great to reduce diff noise (adding another line after the last one does not require to modify the one that was the last one before).