[MOD] Allow tiki.ini global configuration to be set from environment variables

git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/12.x@48274 b456876b-0849-0410-b77d-98878d47e9d5
[MRG] Automatic merge, branches/12.x 48272 to 48274

git-svn-id: file:///var/local/code.tiki.org/tikisvn/trunk@48275 b456876b-0849-0410-b77d-98878d47e9d5
[FIX] Forced enable should display child container

git-svn-id: file:///var/local/code.tiki.org/tikisvn/trunk@48277 b456876b-0849-0410-b77d-98878d47e9d5