[Sanitizer] Make disable_coredump a common flag and use it in TSan

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@215479 91177308-0d34-0410-b5e6-96231b3b80d8
[TSan] Share the code the setup code calling getrlim/setrlim with sanitizer_common

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@215481 91177308-0d34-0410-b5e6-96231b3b80d8
[MSan] Disable coredump for 64-bit binaries.

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@215482 91177308-0d34-0410-b5e6-96231b3b80d8