[MacPorts] #17349: svn.tag should be called svn.rev

[MacPorts]

#17349: svn.tag should be called svn.rev
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 Reporter:  ryandesign@…             |       Owner:  macports-tickets@…                   
     Type:  enhancement              |      Status:  new                                  
 Priority:  Normal                   |   Milestone:  MacPorts base enhancements           
Component:  base                     |     Version:  1.6.0                                
 Keywords:                           |        Port:                                       
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 The `svn.tag` keyword should really be called `svn.rev` because it is
 where you put the revision of the repository you would like to check out.
 I'm sure it's just called "tag" since it was probably copied from (or
 maybe even shares code with) the cvs checkout feature, where `cvs.tag`
 makes sense, since it's the tag name you want to check out.

 We should allow `svn.rev` as a synonym of `svn.tag`. Then, once we release
 a version of MacPorts with that change, we should mass-update all ports to
 use `svn.rev` instead. Then we can modify `port lint` to issue a warning
 if you use `svn.tag` and suggest you use `svn.rev` instead.

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Ticket URL: <http://trac.macports.org/ticket/17349>
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