[MacPorts] #22202: update gromacs with gcc44 variant and forcefield patches

[MacPorts]

#22202: update gromacs with gcc44 variant and forcefield patches
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 Reporter:  adfernandes@…             |       Owner:  adfernandes@…           
     Type:  update                    |      Status:  new                     
 Priority:  Normal                    |   Milestone:                          
Component:  ports                     |     Version:  1.8.1                   
 Keywords:                            |        Port:  gromacs                 
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 Added a variant to build with gcc44.

 Patchfile fixes a typo in the `.rtp` file for forcefields `ffG53a6` and
 `ffG53a5` in Gromacs versions up to (and including) version 4.0.5. See
 [http://www.bevanlab.biochem.vt.edu/Pages/Personal/justin/gmx-
 tutorials/membrane_protein/01_pdb2gmx.html
 http://www.bevanlab.biochem.vt.edu/Pages/Personal/justin/gmx-
 tutorials/membrane_protein/01_pdb2gmx.html] for details.

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Ticket URL: <http://trac.macports.org/ticket/22202>
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