ocamldebug.el load time (cond (window-system)) incompatible with emacs server

[SkySkimmer]

In ocamldebug.el there's a conditional on window-system at load time https://github.com/ocaml/tuareg/blob/c81413b5dc242483b5de92bf47eb07612748d107/ocamldebug.el#L75-L76 If emacs is started with --daemon and tuareg loaded by the user's init.el, and then the user opens a GUI client frame, the conditional will have produced incorrect results. At the user level this may manifest as "incorrect arguments (overlayp)" process filter error messages, strange slowness when sending commands, and lack of underlining in the source file (perhaps not exhaustive).

[monnier]

In ocamldebug.el there's a conditional on window-system at load time

I believe I have now fixed it in master, thanks.

[Chris00]

@monnier Thanks!