Handling uncaught exception (early exit)

[Sanggyu Lee]

Several issues about uncaught exception are reported.
I think this items should be considered together, and put discussion in one place.

• What should we do when exception is occurred during exit?
  • Related issue: Process.exit (#1323)
• How can we clean up on NuttX or TizenRT?
  • Related issue: UV cleanup assertion failure (#1245)

[Sanggyu Lee]

Related Issues: #1348, #1349, #1350

[László Langó]

All related issues/PRs are closed. Feel free to reopen if still valid.