Fixed continue issues with process attach/detach
- added code for tracking transition from eStateAttaching to eStateStopped in event listener and handling process continuation there.

Patch by Arthur Evstifeev!



git-svn-id: https://llvm.org/svn/llvm-project/lldb/trunk@182806 91177308-0d34-0410-b5e6-96231b3b80d8