include: Factor fnameat.h out of prototypes.h

Signed-off-by: Markus Armbruster <armbru@pond.sub.org>

src/lib/common/conftab.c

@@ -35,6 +35,7 @@
 #include <errno.h>
 #include <stdio.h>
 #include "file.h"
+#include "fnameat.h"
 #include "optlist.h"
 #include "prototypes.h"
 #include "xdump.h"

src/lib/common/emp_config.c

@@ -50,6 +50,7 @@
 #include <string.h>
 #include <unistd.h>
 
+#include "fnameat.h"
 #include "misc.h"
 #include "optlist.h"
 #include "prototypes.h"

src/lib/gen/fnameat.c

@@ -33,7 +33,9 @@
 #include <config.h>
 
 #include <errno.h>
-#include "prototypes.h"
+#include <stdlib.h>
+#include <string.h>
+#include "fnameat.h"
 
 static int fname_is_abs(const char *);