Enable lldb-server on Windows
This commit contains three small changes to enable lldb-server on Windows.
- Add lldb-server for Windows to the build
- Disable pty redirection on Windows for the initial lldb-server bring up
- Add a support to get the parent pid for a process on Windows
- Ifdef some signals which aren't supported on Windows
Thanks to Hui Huang for the help with this patch!
Reviewed By: labath
Subscribers: JDevlieghere, compnerd, Hui, amccarth, xiaobai, srhines, mgorny, lldb-commits
Differential Revision: https://reviews.llvm.org/D61686