[MacPorts] #24112: Add clang, checker and lto to llvm

[MacPorts]

#24112: Add clang, checker and lto to llvm
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 Reporter:  macports@…         |       Owner:  erickt@…           
     Type:  enhancement        |      Status:  new                
 Priority:  Normal             |   Milestone:                     
Component:  ports              |     Version:  1.8.2              
 Keywords:  haspatch           |        Port:  llvm               
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Comment(by macports@…):

 All ".dir" files get removed now. Additionally a fix for #24807 is
 included. And I decided to make llvm-mc accessible in ${prefix}/bin. My
 patchset has grown considerably, so I dont create diffs anymore. The
 latest version is available from https://macports.feiri.eu/

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Ticket URL: <http://trac.macports.org/ticket/24112#comment:4>
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