memfd: rename memfd.h to memfd-util.h to avoid any confusion with any libc provided headers

Makefile.am

@@ -881,8 +881,8 @@ libsystemd_shared_la_SOURCES = \
 	src/shared/copy.h \
 	src/shared/base-filesystem.c \
 	src/shared/base-filesystem.h \
-	src/shared/memfd.c \
-	src/shared/memfd.h \
+	src/shared/memfd-util.c \
+	src/shared/memfd-util.h \
 	src/shared/uid-range.c \
 	src/shared/uid-range.h \
 	src/shared/nss-util.h

src/journal/journal-send.c

@@ -32,7 +32,7 @@
 #include "sd-journal.h"
 #include "util.h"
 #include "socket-util.h"
-#include "memfd.h"
+#include "memfd-util.h"
 
 #define SNDBUF_SIZE (8*1024*1024)
 

src/journal/journald-native.c

@@ -33,7 +33,7 @@
 #include "journald-console.h"
 #include "journald-syslog.h"
 #include "journald-wall.h"
-#include "memfd.h"
+#include "memfd-util.h"
 
 bool valid_user_field(const char *p, size_t l, bool allow_protected) {
         const char *a;

src/libsystemd/sd-bus/bus-message.c

@@ -28,7 +28,7 @@
 #include "strv.h"
 #include "time-util.h"
 #include "cgroup-util.h"
-#include "memfd.h"
+#include "memfd-util.h"
 
 #include "sd-bus.h"
 #include "bus-message.h"

src/libsystemd/sd-bus/test-bus-zero-copy.c

@@ -24,7 +24,7 @@
 
 #include "util.h"
 #include "log.h"
-#include "memfd.h"
+#include "memfd-util.h"
 
 #include "sd-bus.h"
 #include "bus-message.h"

src/shared/memfd-util.c

@@ -31,7 +31,7 @@
 
 #include "util.h"
 #include "bus-label.h"
-#include "memfd.h"
+#include "memfd-util.h"
 #include "utf8.h"
 #include "missing.h"