fix some gcc warnings, and maybe even a ppu bug?first commit in a _long_ time, and it's just because I installed a fresh linux distro and wanted to see if ANESE compiles on it. It does, but I noticed a couple of warnings and bugs, so these are some quick fixes. looks like I had an unintended fallthrough in my bgr_fetch routine. not sure how mission-critical this is, but maybe it fixes stuff? other than that, g++ helpfuly noted some other silly errors and unused vars, so I cleaned those up too. lastly, I removed some code that skipped the first directory returned by cute_files in the menu component. Not _super_ sure why that was there in the first place, but directory traversal now works on some more linux distros (such as the one I am running)