add haxedoc to uninstall in Makefile (closes #2582)
add haxedoc to uninstall in Makefile (closes #2582)

pleclech/hacking-haxe,pleclech/hacking-haxe,pleclech/hacking-haxe,pleclech/hacking-haxe,pleclech/hacking-haxe,pleclech/hacking-haxe