Having binary files in a repository is not a good thing

With this checkin, we use the installed clang compiler to build crashinfo.so from crashinfo.c upon every test suite execution
We also try to cleanup after ourselves, which of course will only work if the test suite does not actually crash



git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@197106 91177308-0d34-0410-b5e6-96231b3b80d8