tsan: switch to 4 shadow cells by default (since that's what we use everywhere now)
tsan: switch to 4 shadow cells by default (since that's what we use everywhere now)


git-svn-id: c199f293c43da69278bea8e88f92242bf3aa95f7@168059 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