[FIX] minify: Respect external status of late js files (they shouldn't be minified)

git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/11.x@46417 b456876b-0849-0410-b77d-98878d47e9d5
[MRG] Automatic merge, branches/11.x 46415 to 46417

git-svn-id: file:///var/local/code.tiki.org/tikisvn/trunk@46418 b456876b-0849-0410-b77d-98878d47e9d5