Build website incrementally (and faster if you have the CPU cores)

This is done by replacing www/generate.sh with a Makefile. Benefits:

- Makes builds incremental, meaning that only the minimum number of
  markdown files will be converted to HTML during a build. The previous
  scheme always generated a new HTML file for every markdown file,
  which is a big waste of time if only 1 or 2 markdown files have been
  changed.

- Allows for much faster builds through concurrent jobs (e.g., via
  "make -j4").  On my 4-core machine, my average build time for the
  website with generate.sh was just over 26 seconds; with "make -j4",
  it was 13 seconds.

- Avoids portability issues with find(1) in generate.sh, which I was
  encountering on OpenBSD.

A note on portability: unlike GNU Make, OpenBSD's Make does not have
the "$(shell [commands])" construct, so we don't use that. Instead we
use "!= [commands]", which is supported by both.

1 files changed, 0 insertions, 1 deletions

diff --git a/www/publish.sh b/www/publish.sh
index 40140728..b1b1b405 100755
--- a/www/publish.sh
+++ b/www/publish.sh
@@ -20,7 +20,6 @@
 [ "x${DEBUG+set}" = 'xset' ] && set -v
 set -e
 
-printf '%s\n' $1
 FILE=${1%.md}
 TMPFILE=$(mktemp -t libreboot_www.XXXXXXXXXX)