Fix find-tcl for Dash
Fix find-tcl for Dash

swift-lang/swift-t,blue42u/swift-t,blue42u/swift-t,blue42u/swift-t,swift-lang/swift-t,swift-lang/swift-t,blue42u/swift-t,swift-lang/swift-t,swift-lang/swift-t,blue42u/swift-t,swift-lang/swift-t,blue42u/swift-t,blue42u/swift-t,swift-lang/swift-t