devel/libev: Unbreak current after inotify add

After inotify was added to main, if condition bellow leads to build error
related to missing (linux) statfs.h header.

Fix it by adjusting correct headers:

 #if EV_USE_INOTIFY
-# include <sys/statfs.h>
+# include <sys/mount.h>
 # include <sys/inotify.h>

While here, refresh patches.

Approved by:	portmgr (blanket, build fix)
Sugested by:	markj
See also;	https://lists.freebsd.org/archives/dev-commits-src-all/2025-July/057269.html

devel/libev/files/patch-Makefile.in

@@ -1,6 +1,6 @@
---- Makefile.in.orig	2015-12-20 21:12:45 UTC
+--- Makefile.in.orig	2020-03-18 12:27:30 UTC
 +++ Makefile.in
-@@ -343,7 +343,7 @@ EXTRA_DIST = LICENSE Changes libev.m4 au
+@@ -357,7 +357,7 @@ man_MANS = ev.3
  	     ev.3 ev.pod Symbols.ev Symbols.event
  
  man_MANS = ev.3

devel/libev/files/patch-configure

@@ -1,6 +1,6 @@
---- configure.orig	2015-12-20 21:12:45 UTC
+--- configure.orig	2020-03-18 12:27:26 UTC
 +++ configure
-@@ -3879,14 +3879,6 @@ else
+@@ -3954,14 +3954,6 @@ fi
  fi
  
  

devel/libev/files/patch-ev.c

@@ -1,6 +1,15 @@
---- ev.c.orig	2015-12-20 21:12:53 UTC
+--- ev.c.orig	2020-03-18 12:27:32 UTC
 +++ ev.c
-@@ -2736,7 +2736,7 @@ ev_recommended_backends (void) EV_THROW
+@@ -507,7 +507,7 @@
+ #endif
+ 
+ #if EV_USE_INOTIFY
+-# include <sys/statfs.h>
++# include <sys/mount.h>
+ # include <sys/inotify.h>
+ /* some very old inotify.h headers don't have IN_DONT_FOLLOW */
+ # ifndef IN_DONT_FOLLOW
+@@ -3149,7 +3149,7 @@ ev_recommended_backends (void) EV_NOEXCEPT
  {
    unsigned int flags = ev_supported_backends ();