Added filename as an argument to time(); updated scripts.
Attempted to remove libgd package from the OS but it looks like something
needs it.  Instead, I updated gd2-ffij to always use the version in /usr/local.
Added a test of the easy rotations in GD.
Corrected help msg for gd_flip90.rb.
Added basic rotation benchmark.  Not used.
Now fetches image files remotely as part of setup; replaces pic1.jpg.
Removed 15tiny.jpg from the list of images.
Added basic GD resizing benchmark.
fetch-images.sh now creates the data/ dir if it's not there.
Oops.  Committed before saving everything.
build.sh is now a bit smarter.

It now does a git-pull and doesn't recreate configure if it's present.

(Not perfect, but better than before, assuming it works.)
Added a couple of little experimental programs.
Added automation to update and rebuild everything.

checkout.sh now switches existing repos to the desired branch and does
a git-pull if the repo is already present.

New script 'checkout_all.sh' calls checkout on all desired repos.
Invoking it directly will ensure everything is updated.

build.sh no longer does the git-pull.
Misc. process fixes.

build.sh now (more) correctly checks if configure has already been run.

setup.sh declines to run if it is being run on the VM.
More little test programs.
Have a basic timed interpolating resizer working.
Added most of a working resizer benchmark runner.
Resizer benchmark is mostly done; still need to separate out the first run.
Cleaned up the progress messages a bit.
Minor code cleanup and additional documentation.