Run crashlog inside lldb when invoked in interactive mode from the
command line. Currently, when passing -i to crashlog from the command
line, we symbolicate in LLDB and immediately exit right after. This
pretty much defeats the purpose of interactive mode. That said, we
wouldn't want to re-implement the driver from the crashlog script.
Re-invoking the crashlog command from inside LLDB solves the issue.
rdar://97801509
Differential revision: https://reviews.llvm.org/D152319
7b4792159c