Disable failing ASAN LongJump test on ARM

Updated the URL to reflect information on the problem as well as build the
case for ARM. This seems to be a wider problem, not ARM or PPC specific.

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@219680 91177308-0d34-0410-b5e6-96231b3b80d8