Merge pull request davidmoreno#178 from davidmoreno/docs

Improved docs

Release onion 0.7.

Release onion 0.5.

Release onion 0.4.

Release onion 0.3.

Release onion 0.2.

Added missing stdlib.h to poller.c.

On linux did not fail, on other platforms was poller.c is not used, but now its right.

Fixed show client address on log. Thanks to Andrew Victor for reportng.

Removed AGPL advertishment, as now is LGPL always.

Some fixes to compilation on F15. Fixed bug that do no return proper …

…sessions.