Simplify until_found_end_if() in template
Fix crash when outputting JSON output in freegeoip sample app

Closes #44.
remove a local variable that is not really used
Use __builtin_ia32_crc32di() if possible when calculating CRC32
Add systemd socket activation

Uses slightly modified sd-daemon.[ch] files directly from systemd
repository.
Finally add .gitignore file.
Update config.port if activated from systemd
Fix `fd may be used uninitialized in this function` warning
Cleaner IMPLEMENT_FUNCTION() macro in lwan-status.c
Use lwan_status_critical_*() in lwan_socket_init()
Add buildbot status

There's still work to do: static analysis isn't working, and unit tests
should be executed as well.
Add link to Clang Static Analysis reports
Fix use after free in HTTP authorization code
Remove call to srand()

rand() isn't called anywhere in the code anymore.
Update buildbot address to http://buildbot.lwan.ws/
http://lwan.ws is now served by lwan -- update the FAQ
Allow specifying path to lwan binary in testsuite.py
Update README.md to add output of unit tests

Also, update waterfall links.
Fix waterall links, for real this time
Add 'redirect' callback