Ignore utime errors for until we restore old behavior for tar + libtar.

ports/tar/nacl.patch

Index: ports/tar/nacl.patch
diff --git a/ports/tar/nacl.patch b/ports/tar/nacl.patch
index 0d6bd6de0adf02067fed8963a7e284d8a0a40987..010d1af55edf0eb689979a17d83b96047571c127 100644
--- a/ports/tar/nacl.patch
+++ b/ports/tar/nacl.patch
@@ -27,6 +27,33 @@ index 86de4cc..64eeb01 100644
  LIB_CLOCK_GETTIME = @LIB_CLOCK_GETTIME@
  LIB_SETSOCKOPT = @LIB_SETSOCKOPT@
  LTLIBICONV = @LTLIBICONV@
+diff --git a/src/extract.c b/src/extract.c
+index f348b82..e536c05 100644
+--- a/src/extract.c
++++ b/src/extract.c
+@@ -255,6 +255,14 @@ set_stat (char const *file_name,
+ 
+ 	  utimbuf.modtime = stat_info->st_mtime;
+ 
++          /* TODO(bradnelson): Remove this when all mounts handle utime. */
++#if defined(__native_client__)
++	  if (utime (file_name, &utimbuf) < 0) {
++            if (errno != ENOSYS && errno != EINVAL) {
++	      utime_error (file_name);
++            }
++          }
++#else
+ 	  if (utime (file_name, &utimbuf) < 0)
+ 	    utime_error (file_name);
+ 	  else
+@@ -262,6 +270,7 @@ set_stat (char const *file_name,
+ 	      check_time (file_name, utimbuf.actime);
+ 	      check_time (file_name, utimbuf.modtime);
+ 	    }
++#endif
+ 	}
+ 
+       /* Some systems allow non-root users to give files away.  Once this
 diff --git a/src/tar.c b/src/tar.c
 index 31d7d30..eec331e 100644
 --- a/src/tar.c