am 5b5212b4: am 307aadb8: Merge "libc: Add missing C++ guards to <pathconf.h>" into gingerbread

Merge commit '5b5212b457f7308f9d7d4011c02af71ef1cad9c4'

* commit '5b5212b457f7308f9d7d4011c02af71ef1cad9c4':
  libc: Add missing C++ guards to <pathconf.h>