Rename tests/ -> test/ and update internal refs.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>

test/tempfile.c

@@ -0,0 +1,36 @@
+#include <fcntl.h>		/* O_TMPFILE requires -D_GNU_SOURCE */
+#include <paths.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include "check.h"
+
+#ifndef  O_TMPFILE
+#warning O_TMPFILE is missing, either too old GLIBC, Linux, or non-Linux system
+#endif
+
+#define READBACK "Reality is frequently inaccurate.\n"
+
+
+int main(void)
+{
+	int ret;
+	FILE *fp;
+	char buf[80] = "";
+
+	printf("Before tempfile():\n");
+	ret = system("ls -lrt " _PATH_TMP " | tail -3");
+
+	fp = tempfile();
+	fail_unless(fp != NULL);
+
+	ret = fputs(READBACK, fp);
+	rewind(fp);
+	if (fgets(buf, sizeof(buf), fp))
+		fprintf(stderr, "\nRead-back from tempfile: %s", buf);
+	fail_unless(!strcmp(buf, READBACK));
+
+	printf("\nAfter tempfile(), should be same list:\n");
+	ret = system("ls -lrt " _PATH_TMP " | tail -3");
+
+	return fclose(fp);
+}