am 3e467785: Remove irritating warnings about \'va_list\' mangling when building C++ sources.

Merge commit '3e4677856f0e16a732cecc15cafa7efde1f21241' into gingerbread-plus-aosp

* commit '3e4677856f0e16a732cecc15cafa7efde1f21241':
  Remove irritating warnings about 'va_list' mangling when building C++ sources.