[MacPorts] #48347: tbb: use expand operator instead of eval

[MacPorts]

#48347: tbb: use expand operator instead of eval
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 Reporter:  ryandesign@…  |      Owner:  sean@…
     Type:  enhancement   |     Status:  new
 Priority:  Normal        |  Milestone:
Component:  ports         |    Version:  2.3.3
 Keywords:  haspatch      |       Port:  tbb
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 Now that we guarantee the availability of Tcl 8.5 in MacPorts, we should
 use the expand operator (`{*}`) instead of the `eval` proc to expand
 lists. May I commit this patch?

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Ticket URL: <https://trac.macports.org/ticket/48347>
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