[MacPorts] #22536: fix blt 2.4z build

[MacPorts]

#22536: fix blt 2.4z build
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 Reporter:  howarth@…                 |       Owner:  macports-tickets@…                   
     Type:  update                    |      Status:  new                                  
 Priority:  Normal                    |   Milestone:                                       
Component:  ports                     |     Version:  1.8.1                                
 Keywords:  x11                       |        Port:  blt                                  
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Comment(by howarth@…):

 Note that none of the current Linux distros has a blt that works
 perfectly. In fact the complete set of Gentoo patches for blt (including
 their forked tarball) badly breaks pymol's apbs tool suppprt. For a
 perfect blt under tcl 8.5, we will have to wait  for blt 3.0 which is
 under heavy development in its cvs.

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Ticket URL: <http://trac.macports.org/ticket/22536#comment:1>
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