Allow the configuration file to be specified via an environment variable.

--- geoclue-2.1.10/src/gclue-config.c	2015-04-07 09:50:07.721074380 +0200
+++ geoclue-2.1.10/src/gclue-config.c	2015-04-07 10:27:26.613171960 +0200
@@ -235,6 +235,11 @@
 gclue_config_init (GClueConfig *config)
 {
         GError *error = NULL;
+	const char *config_file_path;
+
+	config_file_path = g_getenv ("GEOCLUE_CONFIG_FILE");
+	if (config_file_path == NULL)
+	  config_file_path = CONFIG_FILE_PATH;
 
         config->priv =
                 G_TYPE_INSTANCE_GET_PRIVATE (config,
@@ -242,7 +247,7 @@
                                             GClueConfigPrivate);
         config->priv->key_file = g_key_file_new ();
         g_key_file_load_from_file (config->priv->key_file,
-                                   CONFIG_FILE_PATH,
+                                   config_file_path,
                                    0,
                                    &error);
         if (error != NULL) {
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<tr class='logheader'><td><span title='2020-04-14 22:48:52 +0200'>2020-04-14</span></td><td class='logsubject'><a href='/guix/commit/gnu/packages/cook.scm?id=2e3d5fdf055906a7de356d8f161cebaa3a40e691'>gnu: cook: Fix test failure.</a></td><td>Marius Bakke</td></tr>
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* gnu/packages/cook.scm (cook)[arguments]: Override LC_ALL for one test.


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<tr class='logheader'><td><span title='2020-03-16 16:48:31 +0100'>2020-03-16</span></td><td class='logsubject'><a href='/guix/commit/gnu/packages/cook.scm?id=1fddf8ef1702f96340d7bede8ecbd90b64c2019f'>gnu: cook: Fix.</a></td><td>Tobias Geerinckx-Rice</td></tr>
<tr class='nohover-highlight'><td/><td colspan='3' class='logmsg'>
This follows up on commit 5adc59e6fe8abb701df8fc97d56a6e60258318a4.

* gnu/packages/cook.scm (cook)[home-page]: Better.

Reported-by: Marius Bakke &lt;mbakke@fastmail.com&gt;


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<tr class='logheader'><td><span title='2020-03-16 16:32:43 +0100'>2020-03-16</span></td><td class='logsubject'><a href='/guix/commit/gnu/packages/cook.scm?id=5adc59e6fe8abb701df8fc97d56a6e60258318a4'>gnu: cook: Use archived home page.</a></td><td>Tobias Geerinckx-Rice</td></tr>
<tr class='nohover-highlight'><td/><td colspan='3' class='logmsg'>
* gnu/packages/cook.scm (cook)[home-page]: Use a Web Archived copy.


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