[asan] Use gold linker in android tests.
[asan] Use gold linker in android tests.

Replace a partial workaround for ld.bfd strangeness with the ultimate one: -fuse-ld=gold.
Reason: ld.bfd problem gets worse with libc++-based NDK toolchain.

git-svn-id: c199f293c43da69278bea8e88f92242bf3aa95f7@315039 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