be more C99 compliant (Florian Weimer)

CHANGES

@@ -1,4 +1,5 @@
 0.34:
+  be more C99 compliant (Florian Weimer)
 
 0.33:
   add byte_start, byte_starts

trypoll.c

@@ -1,6 +1,7 @@
 #include <sys/types.h>
 #include <fcntl.h>
 #include <poll.h>
+#include <unistd.h>
 
 int main()
 {

trysendfile.c

@@ -62,9 +62,8 @@ int main() {
 #define _FILE_OFFSET_BITS 64
 #include <sys/types.h>
 #include <unistd.h>
-#if defined(__GLIBC__)
-#include <sys/sendfile.h>
-#elif defined(__dietlibc__)
+#include <fcntl.h>
+#if defined(__GLIBC__) || defined(__dietlibc__)
 #include <sys/sendfile.h>
 #else
 #include <linux/unistd.h>
@@ -77,7 +76,7 @@ int main() {
   off_t o=0;
   off_t r=sendfile(1,fd,&o,23);
   if (r!=-1)
-    printf("sent %llu bytes.\n",r);
+    printf("sent %lld bytes.\n",(long long int)r);
   return 0;
 }