Update darwin OS version.

Author: bmomjian

src/template/darwin

@@ -6,7 +6,7 @@ CC="$CC -no-cpp-precomp"
 USE_NAMED_POSIX_SEMAPHORES=1
 
 THREAD_SUPPORT=yes
-# verified 2004-04-07
+# verified Mac OS X 10.3.3, Darwin Kernel Version 7.3.0, 2004-04-07
 STRERROR_THREADSAFE=yes
 GETPWUID_THREADSAFE=yes
 GETHOSTBYNAME_THREADSAFE=yes