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- Add support for marking a single test as not supported by an abi.
- Add four bionic tests that do not run on 64 bit abis.
- Make all native test executables end in 32/64 depending on the abi.
- For 64 bit abis, force the inclusion of the 64 bit test executable.
- Modify the native gtest runner to append 32/64 to the executable
  depending on the bitness of the abi.

Bug: 17927956
Change-Id: Ie36a189f65c901b16041e4e7db8d806480a9861a