code review 60840049: lib9: enable on Plan 9

src/lib9/time.c

+// +build !plan9
+
 /*
 Plan 9 from User Space src/lib9/time.c
 http://code.swtch.com/plan9port/src/tip/src/lib9/time.c
 
 Copyright 2001-2007 Russ Cox.  All Rights Reserved.
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
 in the Software without restriction, including without limitation the rights
 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
@@ skipping 46 matching lines @@
 {
         long t[4];
         double d;
 
         if(p9times(t) < 0)
                 return -1.0;
 
         d = (double)t[0]+(double)t[1]+(double)t[2]+(double)t[3];
         return d/1000.0;
 }