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='2018-03-14 17:37:20 +0100'>2018-03-14</span></td><td><a href='/guix/commit/gnu/packages/zile.scm?id=8c72ed923d77ee55989965bb02628043799b9548'>Merge branch 'master' into core-updates</a></td><td>Ricardo Wurmus</td></tr>
<tr><td><span title='2018-03-11 22:04:40 +0100'>2018-03-11</span></td><td><a href='/guix/commit/gnu/packages/zile.scm?id=189be331acfda1c242a9c85fca8d2a0356742f48'>build-system/gnu: Add 'bootstrap' phase.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2018-03-09 23:24:34 +0100'>2018-03-09</span></td><td><a href='/guix/commit/gnu/packages/zile.scm?id=464f5447396fcec9b43f7eab71d5d42b522a157f'>gnu: 'autoconf-wrapper' is no longer a procedure.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2017-10-07 17:08:32 +0200'>2017-10-07</span></td><td><a href='/guix/commit/gnu/packages/zile.scm?id=9070ca4479273d9a79f00a99da1d6406cb1d6e36'>gnu: zile: Update to 2.4.14.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2017-01-03 18:16:01 +0100'>2017-01-03</span></td><td><a href='/guix/commit/gnu/packages/zile.scm?id=70c63411109de5a6098f9d8396eed6cd569dc5e8'>gnu: Add Zile-on-Guile.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>