JobActivity autocommands run vimscript and must be executed on Nvim main loop.
Since the previous commit removed automatic calls to `event_push` on RStream/Job
callbacks, this adds it back, but in eval.c where job control is implemented.
Silence -Wstrict-prototypes and static analyser warnings
Using "(void)" provides an explicit there-are-no-arguments prototype.
Using the exact type in "malloc(...sizeof)" is clearer and silences
warnings from clang's static analyzer. (John Marshall)
Move files from src/ to src/nvim/.
- src/nvim/ becomes the new root dir for nvim executable sources.
- src/libnvim/ is planned to become root dir of the neovim library.
