[asan] Disable wait4 test on Android.

https://code.google.com/p/memory-sanitizer/issues/detail?id=64


git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@217753 91177308-0d34-0410-b5e6-96231b3b80d8
[asan] Fix path in test.


git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@217754 91177308-0d34-0410-b5e6-96231b3b80d8