tsan: fix darwin Go support
tsan: fix darwin Go support

os_trace turns out to be a macro that creates static object.
Function-static objects use __cxa_atexit and __dso_handle
which are not present in Go runtime.



git-svn-id: c199f293c43da69278bea8e88f92242bf3aa95f7@267720 91177308-0d34-0410-b5e6-96231b3b80d8

llvm-mirror/compiler-rt,llvm-mirror/compiler-rt,llvm-mirror/compiler-rt,llvm-mirror/compiler-rt,llvm-mirror/compiler-rt