revert: restore pre-upstream-merge baseline (tree of 3b673150b)

Roll the tree back to the pre-merge tip 3b673150b, undoing the upstream sync merge 72f4f186d (303 files) and the 13 post-merge commits layered on top of it.

Purpose: restore the last pre-sync baseline so the reported OMEMO/OTR encryption regressions can be reproduced against a known-good state and the upstream sync ruled in or out as the cause. Nothing is dropped from history; the merge and every post-merge commit remain reachable and can be cherry-picked back selectively.

Baseline:     3b673150b chore(chatlog): disable background message file logging (stage 1)

Undoes merge: 72f4f186d merge: sync upstream profanity-im/profanity

src/common.h

@@ -4,7 +4,36 @@
  *
  * Copyright (C) 2012 - 2019 James Booth <boothj5@gmail.com>
  *
- * SPDX-License-Identifier: GPL-3.0-or-later WITH OpenSSL-exception
+ * This file is part of Profanity.
+ *
+ * Profanity is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Profanity is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Profanity.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ * In addition, as a special exception, the copyright holders give permission to
+ * link the code of portions of this program with the OpenSSL library under
+ * certain conditions as described in each individual source file, and
+ * distribute linked combinations including the two.
+ *
+ * You must obey the GNU General Public License in all respects for all of the
+ * code used other than OpenSSL. If you modify file(s) with this exception, you
+ * may extend this exception to your version of the file(s), but you are not
+ * obligated to do so. If you do not wish to do so, delete this exception
+ * statement from your version. If you delete this exception statement from all
+ * source files in the program, then also delete it here.
+ *
+ * @file common.h
+ *
+ * @brief Common utilities for the project.
  */
 
 #ifndef COMMON_H
@@ -83,22 +112,12 @@ void auto_close_gfd(gint* fd);
 
 void auto_close_FILE(FILE** fd);
 
-void auto_free_gerror(GError** err);
-#define auto_gerror __attribute__((__cleanup__(auto_free_gerror)))
-
 #if defined(__OpenBSD__)
 #define STR_MAYBE_NULL(p) (p) ?: "(null)"
 #else
 #define STR_MAYBE_NULL(p) (p)
 #endif
 
-#define PROF_GERROR_MESSAGE(err) (err) ? (err)->message : "error message missing"
-#define PROF_GERROR_FREE(err)  \
-    do {                       \
-        if (err)               \
-            g_error_free(err); \
-    } while (0)
-
 typedef struct prof_keyfile_t
 {
     gchar* filename;
@@ -152,21 +171,18 @@ typedef enum {
     RESOURCE_XA
 } resource_presence_t;
 
+extern gboolean background_mode;
+
 gboolean string_to_verbosity(const char* cmd, int* verbosity, gchar** err_msg);
 
 gboolean create_dir(const char* name);
 gboolean copy_file(const char* const src, const char* const target, const gboolean overwrite_existing);
 char* str_replace(const char* string, const char* substr, const char* replacement);
 gboolean strtoi_range(const char* str, int* saveptr, int min, int max, char** err_msg);
-gsize g_diff_to_gsize(const void* end, const void* start);
 int utf8_display_len(const char* const str);
-gchar* str_xml_sanitize(const char* const str);
-
-gboolean string_matches_one_of(const char* what, const char* is, gboolean is_can_be_null, const char* first, ...) __attribute__((sentinel));
-gboolean valid_tls_policy_option(const char* is);
 
 char* release_get_latest(void);
-gboolean release_is_new(const char* const curr_version, const char* const found_version);
+gboolean release_is_new(char* found_version);
 
 char* strip_arg_quotes(const char* const input);
 gboolean is_notify_enabled(void);
@@ -179,18 +195,16 @@ int is_regular_file(const char* path);
 int is_dir(const char* path);
 void get_file_paths_recursive(const char* directory, GSList** contents);
 
-gchar* get_random_string(size_t length);
+char* get_random_string(int length);
 
 gboolean call_external(gchar** argv);
-gchar** format_call_external_argv(const char* template_fmt, const char* url, const char* filename);
+gchar** format_call_external_argv(const char* template, const char* url, const char* filename);
 
 gchar* unique_filename_from_url(const char* url, const char* path);
 gchar* get_expanded_path(const char* path);
 
 char* basename_from_url(const char* url);
 
-gchar* prof_date_time_format_iso8601(GDateTime* dt);
-
 gchar* prof_get_version(void);
 void prof_add_shutdown_routine(void (*routine)(void));