fixed embarrassing memory leak in 'collectCycles'
Merge pull request #327 from Tass/master

KWin echo hack and string literal fix.
working cycle collector for old GC
open arrays documented in the manual
Merge branch 'master' of github.com:Araq/Nimrod
updated news.txt
Merge branch 'master' of github.com:Araq/Nimrod

Conflicts:
	lib/system/gc.nim
GC: incRef needs to add cycleroots
added GC_addCycleRoot
EcmaScript => JS

No one calls it EcmaScript anymore.