REORG: include: move fd.h to haproxy/fd{,-t}.h
A few includes were missing in each file. A definition of
struct polled_mask was moved to fd-t.h. The MAX_POLLERS macro was
moved to defaults.h
Stdio used to be silently inherited from whatever path but it's needed
for list_pollers() which takes a FILE* and which can thus not be
forward-declared.
diff --git a/src/ev_poll.c b/src/ev_poll.c
index 0d0fcaa..344b6d4 100644
--- a/src/ev_poll.c
+++ b/src/ev_poll.c
@@ -25,7 +25,7 @@
#include <types/global.h>
#include <haproxy/activity.h>
-#include <proto/fd.h>
+#include <haproxy/fd.h>
#ifndef POLLRDHUP