[ubsan] Add RTUbsan_standalone into UBSAN standalone shared
[ubsan] Add RTUbsan_standalone into UBSAN standalone shared

Same as for Apple.
This also fixes flags related tests on Android as without this flags are not
initialized.

git-svn-id: c199f293c43da69278bea8e88f92242bf3aa95f7@313519 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