[MacPorts] #36400: pgAdmin3: change variant names

[MacPorts]

#36400: pgAdmin3: change variant names
--------------------------+----------------------
 Reporter:  ryandesign@…  |      Owner:  jwa@…
     Type:  defect        |     Status:  new
 Priority:  Normal        |  Milestone:
Component:  ports         |    Version:  2.1.2
 Keywords:  haspatch      |       Port:  pgAdmin3
--------------------------+----------------------
 {{{
 $ port info pgAdmin3 |head -n 2
 pgAdmin3 @1.16.0 (aqua)
 Variants:             debug, with_postgresql83, with_postgresql84,
 with_postgresql90, with_postgresql91, [+]with_postgresql92
 }}}

 The variant names should be changed. Variant names should not begin with a
 "with_" prefix.

 The old variant names should be retained for one year, marked as requiring
 the new variant names, to facilitate upgrades.

 The attached patch does this, and simplifies the variants as well by
 removing unnecessary directives.

 The way the default variant is selected is also improved so that users
 wishing to use a non-default variant do not encounter an error message
 about variant conflicts.

-- 
Ticket URL: <https://trac.macports.org/ticket/36400>
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