[PATCH] Merge lldb-platform and lldb-gdbserver into a single binary.

[Ed Maste]

In http://reviews.llvm.org/D7545#121674, @silvas wrote:

> Can you maybe use the trick of looking at argv[0] instead of taking a command line option to know which program to be? (assuming it makes sense to do this change). See llvm-ar for an example.


Or look at lld as a good example. It chooses appropriate behaviour based on argv[0] but also has a `-flavor` argument for use when argv[0] does not match any of the known names.

  % ./lld
  Select the appropriate flavor
  OVERVIEW: LLVM Linker
  
  USAGE: lld [options] <inputs>
  
  OPTIONS:
  ...
    -flavor <value> Flavor for linking, options are gnu/darwin/link
  
  
  % ln -s lld ld
  % ./ld
  No input files




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