Removed some now-unused M4 macros
Report event errors
Allow debugtrace to work with Lua 5.2
Prefer traceback over debug.traceback
Use our own error

This error doesn't append the stack location to the error message. While
convenient, it makes nested errors difficult to clean up.
minor debug
Initial server implementation
Use QCoreApplication::exit when possible
Fix a typo
Use a better signal for closing in Rainback
return after calling Qt's exit
minor whitespace