[REL] Preparing SEC release of 6.11

git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/6.x@46485 b456876b-0849-0410-b77d-98878d47e9d5
[REL] Update README file for 6.11

git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/6.x@46486 b456876b-0849-0410-b77d-98878d47e9d5
[REL] Update changelog.txt for 6.11

git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/6.x@46487 b456876b-0849-0410-b77d-98878d47e9d5
[REL] Update copyright.txt for 6.11

git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/6.x@46488 b456876b-0849-0410-b77d-98878d47e9d5
[REL] SecDB for 6.11

git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/6.x@46489 b456876b-0849-0410-b77d-98878d47e9d5