tsan: call fflush(0) on exit again


git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@177522 91177308-0d34-0410-b5e6-96231b3b80d8
tsan: add missing stat descriptions


git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@177523 91177308-0d34-0410-b5e6-96231b3b80d8
tsan: correct sizes of signal-related data structures


git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@177526 91177308-0d34-0410-b5e6-96231b3b80d8