Trivial changes: whitespace and modes.

Remote whitespace at the ends of lines.
Remove blank lines from the ends of files.
Change modes on source files so that they
are not executable.

Signed-off-by: Dan Cross <cross@gajendra.net>

src/cmd/date.c

@@ -25,6 +25,6 @@ main(int argc, char *argv[])
 		print("%s", asctime(gmtime(now)));
 	else
 		print("%s", ctime(now));
-	
+
 	exits(0);
 }