Patch related to
THRIFT-2029 and fixes two test compilation issues with msvc.
1. Renamed small to tiny in test/DebugProtoTest.thrift
Rationale: generated code contains bool small; which is conflicted with macro definition picked up from windows.h > rpcndr.h > "#define small char" (refer to http://connect.microsoft.com/VisualStudio/feedback/details/775845/poorly-picked-names-in-rpcndr-h-have-a-high-chance-of-collision and http://stackoverflow.com/questions/21165891/is-small-a-keyword-in-c and http://code.opencv.org/issues/1041)
2. Use THRIFT_GETTIMEOFDAY instead of gettimeofday in lib/cpp/test/Benchmark.cpp because of absence of latter on Windows