Many of the directories in progs/ were missing .gitignore files or
were tracking generated files. This patch is basically the process of
running `make' in each directory and then finding the untracked files
with `git-ls-files -o --exclude-per-directory=.gitignore'. The existing
files were also sorted.
Add a GLInfo app, a graphical tool displaying GL Info as a treeview.
Usefull to see which OpenGL renderer you use and which extension(s) is supported.
Convert the Makefile to be $(TOP)/configs/default-based.
