js-debugger:
1. Fixed crash on debugger error and show user friendly
message.
2. Fixed dead lock in js sample.
3. Respect 'port' option in remote debug.
4. Fixed errors(deal with absolute scipts name and NULL objects) in
debug.c
5. Implement idebugger_interrupt
language-support-plugin:
1. Add option 'min length of str for completion'.
2. does not unref NULL objects.
3. Fixed regression(Missed semicolon does not highlighted).