style: fixed a line exceeding 80 columns.
updated docs to reflect recent changes.
bugfix: made DDEBUG defineable from the outside.
remove debug code
fixed a typo in calio's last commit.
now we check the ngx_devel_kit dependency at config time and provide …
…a more friendly error message if it is missing.
improved the build script.
reindexed the test files.
fixed another place where gcc 4.1 is unhappy with our type cast under…
minor code cleanup to make gcc -O3 happy.