Merge branch 'seederwork' into super_merge_seederwork

Conflicts:
	lib/wlbud.rb
	lib/wlbud/wlprogram.rb
	test/02_dumb/tc_wl_wlbud_delegation_2_complex.rb
 minor
fix delegation and declation accumulation in ticks
bug in delegation
run_xp_peers modified with shutdown_callback
Merge branch 'wlmeasure' into hotfix
finalise merge with seeders parser and improved tests
minor cleanup in test, add clean dir in teardown, test suite working
seeds add and reewrite enhanced
seed_sprout
change show_wdl_format display _at_ into @ and remove dumb substitution
finish seeder fix
Start on optimization 2. Not complete.
Merge remote-tracking branch 'upstream/seederwork'

Conflicts:
	lib/wlbud.rb
	lib/wlbud/wlprogram.rb
	lib/wlbud/wlvocabulary.rb
	test/02_dumb/tc_wl_wlbud_delegation_2_complex.rb
	test/10_first_gen/tc_wl_runner.rb
Merge branch 'master' of https://github.com/vzaychik/webdamlog-engine