[MacPorts] #69878: legacy-support headers should include optional "secure" definitions

[MacPorts]

#69878: legacy-support headers should include optional "secure" definitions
-------------------------+----------------------------
 Reporter:  fhgwright    |      Owner:  fhgwright
     Type:  enhancement  |     Status:  assigned
 Priority:  Low          |  Milestone:
Component:  ports        |    Version:
 Keywords:               |       Port:  legacy-support
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 The standard include files have optional "secure" definitions for some
 calls, with macro wrappers for additional checks.  The `legacy-support`
 headers should do the same where applicable.

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Ticket URL: <https://trac.macports.org/ticket/69878>
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