Merge changes I32e726c7,I1dc9a708,I09cc335b,Ifb8a66ab,I0e2c25bc, ... am: c5799dd13c...

Merge changes I32e726c7,I1dc9a708,I09cc335b,Ifb8a66ab,I0e2c25bc, ... am: c5799dd13c am: 56a81c096d
am: 285f38d474

* commit '285f38d4742918e8e3df71ac81ebb361ee5b4105':
  versioner: whitelist atexit, turn on symbol checking by default.
  versioner: add missing test.
  versioner: fix false positive with functions only available as inlines.
  versioner: improve error output slightly.
  versioner: merge stdout and stderr in the test runner.
  versioner: clean up tests, test runner.
  versioner: ignore functions that are __INTRODUCED_IN_FUTURE.
  versioner: autodetect paths when no specified.
  versioner: improve usage messages.
  Remove __cachectl.

Change-Id: I9d8287840674868107fa25ba14a73fdb28cddbdf