Remove/patch unreproducible config data.

diff --git a/configure b/configure
index eb9f346..ebab94d 100755
--- a/configure
+++ b/configure
@@ -23163,7 +23163,7 @@ H4_VERSION="`cut -d' ' -f3 $srcdir/README.txt | head -1`"
 
 
 ## Configuration date
- CONFIG_DATE="`date`"
+CONFIG_DATE=`date -u -d "@$SOURCE_DATE_EPOCH"`
 
 ## User doing the configuration
  CONFIG_USER="`whoami`@`hostname`"
diff --git a/libhdf4.settings.in b/libhdf4.settings.in
index 1d9bbb9..4180d72 100644
--- a/libhdf4.settings.in
+++ b/libhdf4.settings.in
@@ -5,10 +5,10 @@ General Information:
 -------------------
 		   HDF4 Version: @H4_VERSION@
 		  Configured on: @CONFIG_DATE@
-		  Configured by: @CONFIG_USER@
+		  Configured by: guix
 		 Configure mode: @CONFIG_MODE@
-		    Host system: @host_cpu@-@host_vendor@-@host_os@
-              Uname information: @UNAME_INFO@
+		    Host system: guix
+              Uname information: guix
 		      Libraries: @STATIC_SHARED@
 	     Installation point: @prefix@
 
-- 
2.10.0
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<tr><td><span title='2021-12-13 17:48:25 +0100'>2021-12-13</span></td><td><a href='/guix/commit/gnu/packages/perl-web.scm?id=8394619baceb118df92e355377fd543bb1aa501a'>gnu: Simplify package inputs.</a><span class='msg-avail'>...<span class='msg-tooltip'>This commit was obtained by running:

  ./pre-inst-env guix style

without any additional argument.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2021-05-19 22:49:33 +0300'>2021-05-19</span></td><td><a href='/guix/commit/gnu/packages/perl-web.scm?id=43c156ea724dd12f40df32507073f12daeb81d73'>gnu: perl-mojolicious: Update to 9.17.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/perl-web.scm (perl-mojolicious): Update to 9.17.
</span></span></td><td>Efraim Flashner</td></tr>
<tr><td><span title='2021-02-28 11:21:49 +0100'>2021-02-28</span></td><td><a href='/guix/commit/gnu/packages/perl-web.scm?id=a359b807e16bc15623664cad500561a5183f776a'>gnu: perl-mojolicious: Use HTTPS home page URI.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/perl-web.scm (perl-mojolicious)[home-page]: Use HTTPS URI.
</span></span></td><td>Nicolas Goaziou</td></tr>