treewide: auto-convert the simple cases to log_*_errno()

As a followup to 086891e5c1 "log: add an "error" parameter to all
low-level logging calls and intrdouce log_error_errno() as log calls
that take error numbers", use sed to convert the simple cases to use
the new macros:

find . -name '*.[ch]' | xargs sed -r -i -e \
's/log_(debug|info|notice|warning|error|emergency)\("(.*)%s"(.*), strerror\(-([a-zA-Z_]+)\)\);/log_\1_errno(-\4, "\2%m"\3);/'

Multi-line log_*() invocations are not covered.
And we also should add log_unit_*_errno().

src/debug-generator/debug-generator.c

@@ -152,7 +152,7 @@ int main(int argc, char *argv[]) {
 
         r = parse_proc_cmdline(parse_proc_cmdline_item);
         if (r < 0)
-                log_warning("Failed to parse kernel command line, ignoring: %s", strerror(-r));
+                log_warning_errno(-r, "Failed to parse kernel command line, ignoring: %m");
 
         if (arg_debug_shell) {
                 r = strv_extend(&arg_wants, "debug-shell.service");