* Revert to old behavior of ignoring a module if it doesn't contain a main   function and no symbols were explicitly marked to be externalized. * Add new -internalize-public-api-list option that can be used if the symbol   list is small, and making a new file is annoying.
* Revert to old behavior of ignoring a module if it doesn't contain a main
  function and no symbols were explicitly marked to be externalized.
* Add new -internalize-public-api-list option that can be used if the symbol
  list is small, and making a new file is annoying.


git-svn-id: 0ff597fd157e6f4fc38580e8d64ab130330d2411@6289 91177308-0d34-0410-b5e6-96231b3b80d8

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