Explicitly use an older C++ standard.

There's some crufty code in here that cannot be compiled with C++11 (a
lot of implicit conversions that C++11 complains about but C++98
doesn't). Moving this project isn't a high priority, so just use an
older standard.

Bug: 18466763
Change-Id: Iaffc7b2b19bb7ecbdc234782fb9370c641559fac
Merge "Explicitly use an older C++ standard."