[RTEMS Project] #3797: Add LLVM as a package

[RTEMS trac]

#3797: Add LLVM as a package
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  Reporter:  Chris Johns  |      Owner:  Chris Johns
      Type:  defect       |     Status:  assigned
  Priority:  normal       |  Milestone:  5.1
 Component:  tool/rsb     |    Version:  5
  Severity:  normal       |   Keywords:
Blocked By:               |   Blocking:
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 Add `5/rtems-llvm` to build LLVM for supported hosts.

 This can used to help resolve the dependency the recent trace changes have
 created by using LLVM symbol/dwarf support.

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Ticket URL: <http://devel.rtems.org/ticket/3797>
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