[MacPorts] #15883: Remove --prefix=${prefix} where unnecessary

[MacPorts]

#15883: Remove --prefix=${prefix} where unnecessary
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  Reporter:  ryandesign at macports.org  |       Owner:  ryandesign at macports.org
      Type:  enhancement              |      Status:  closed                 
  Priority:  Normal                   |   Milestone:  Port Enhancements      
 Component:  ports                    |     Version:  1.7.0                  
Resolution:  fixed                    |    Keywords:                         
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Changes (by ryandesign at macports.org):

  * status:  new => closed
  * resolution:  => fixed

Comment:

 I changed the above ports in r38785, with the exception of httperf which
 was already changed in r38713, and clisp which has a custom `configure`
 phase which currently does not make use of `configure.pre_args`.

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Ticket URL: <http://trac.macports.org/ticket/15883#comment:1>
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