gossip_cyclon: refactor r6998, further tweak startup performance

Improve startup performance by manually sending two triggers on startup instead
of checking the state during initialisation.

git-svn-id: https://scalaris.googlecode.com/svn/trunk@7002 71766da9-9752-0410-ab17-bfafa751c56a
gossip_cyclon: minor docu fixes

git-svn-id: https://scalaris.googlecode.com/svn/trunk@7003 71766da9-9752-0410-ab17-bfafa751c56a
cyclon: rm old cyclon settings from scalaris.cfg

git-svn-id: https://scalaris.googlecode.com/svn/trunk@7004 71766da9-9752-0410-ab17-bfafa751c56a
gossip_load: move value extraction to callback module

git-svn-id: https://scalaris.googlecode.com/svn/trunk@7005 71766da9-9752-0410-ab17-bfafa751c56a
gossip: remove value extraction functions/messages (get_values...)

Value extraction (get_values... messages) is very specific to the callback module
and should therefore be implemented in the api of the given callback module, not
the gossip module.

git-svn-id: https://scalaris.googlecode.com/svn/trunk@7006 71766da9-9752-0410-ab17-bfafa751c56a
user-dev-guide: properly fail the build when the sequence diagrams cannot be build

git-svn-id: https://scalaris.googlecode.com/svn/trunk@7007 71766da9-9752-0410-ab17-bfafa751c56a
user-dev-guide: create a main.pdf including the rrepair sequence diagrams

git-svn-id: https://scalaris.googlecode.com/svn/trunk@7008 71766da9-9752-0410-ab17-bfafa751c56a
gossip_vivaldi: add skeleton implementing gossip_beh
gossip_vivaldi: add settings to scalaris.cfg
gossip_cyclon: use half a trigger interval for manual triggers
gossip: add cycles to web_debug_info
gossip_vivaldi: reimplement vivaldi
wip: activate gossip_vivaldi