Add exception in testsuite: the constants are new

they will be released with OpenBSD 6.2

Author: semarie

libc-test/build.rs

@@ -440,6 +440,9 @@ fn main() {
             "KERN_USERMOUNT" |
             "KERN_ARND" if openbsd => true,
 
+            // These constats were added in OpenBSD 6.2
+            "EV_RECEIPT" | "EV_DISPATCH" if openbsd => true,
+
             // These are either unimplemented or optionally built into uClibc
             "LC_CTYPE_MASK" | "LC_NUMERIC_MASK" | "LC_TIME_MASK" | "LC_COLLATE_MASK" | "LC_MONETARY_MASK" | "LC_MESSAGES_MASK" |
             "MADV_MERGEABLE" | "MADV_UNMERGEABLE" | "MADV_HWPOISON" | "IPV6_ADD_MEMBERSHIP" | "IPV6_DROP_MEMBERSHIP" | "IPV6_MULTICAST_LOOP" | "IPV6_V6ONLY" |