Fix a time bomb present in the OpenJDK tools.

--- a/make/jdk/src/classes/build/tools/generatecurrencydata/GenerateCurrencyData.java
+++ b/make/jdk/src/classes/build/tools/generatecurrencydata/GenerateCurrencyData.java
@@ -285,7 +285,7 @@ public class GenerateCurrencyData {
             String timeString = currencyInfo.substring(4, length - 4);
             long time = format.parse(timeString).getTime();
             if (Math.abs(time - System.currentTimeMillis()) > ((long) 10) * 365 * 24 * 60 * 60 * 1000) {
-                throw new RuntimeException("time is more than 10 years from present: " + time);
+                System.err.println("note: time is more than 10 years from \"present\": " + time);
             }
             specialCaseCutOverTimes[specialCaseCount] = time;
             specialCaseOldCurrencies[specialCaseCount] = oldCurrency;
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<tr><td><span title='2021-05-20 01:58:04 +0200'>2021-05-20</span></td><td><a href='/guix/commit/ROADMAP?id=c0087d33705f53cc3619a1a43a33602aaecc3a8b'>The #guix channel is hosted by Libera Chat.</a><span class='msg-avail'>...<span class='msg-tooltip'>* README (Contact): Update network name.
* ROADMAP: Likewise.
* doc/contributing.texi (Contributing): Likewise.
* doc/guix.texi (After System Installation): Likewise.
</span></span></td><td>Tobias Geerinckx-Rice</td></tr>
<tr><td><span title='2016-01-29 20:21:54 +0300'>2016-01-29</span></td><td><a href='/guix/commit/ROADMAP?id=171a0a13a4350ac9bbed0f2ed8e9c9777cc57b22'>Rename 'dmd' to 'shepherd' in comments and strings.</a><span class='msg-avail'>...<span class='msg-tooltip'>* build-aux/hydra/demo-os.scm (operating-system)[issue]: Point to
  shepherd instead of dmd.
* ROADMAP: Likewise.
* gnu/build/install.scm (directives): Adjust comment.
</span></span></td><td>Alex Kost</td></tr>