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/rfkill/rfkill.c

@@ -45,7 +45,7 @@ int main(int argc, char *argv[]) {
 
         r = mkdir_p("/var/lib/systemd/rfkill", 0755);
         if (r < 0) {
-                log_error("Failed to create rfkill directory: %s", strerror(-r));
+                log_error_errno(-r, "Failed to create rfkill directory: %m");
                 return EXIT_FAILURE;
         }
 
@@ -107,13 +107,13 @@ int main(int argc, char *argv[]) {
                         if (r == -ENOENT)
                                 return EXIT_SUCCESS;
 
-                        log_error("Failed to read %s: %s", saved, strerror(-r));
+                        log_error_errno(-r, "Failed to read %s: %m", saved);
                         return EXIT_FAILURE;
                 }
 
                 r = udev_device_set_sysattr_value(device, "soft", value);
                 if (r < 0) {
-                        log_error("Failed to write system attribute: %s", strerror(-r));
+                        log_error_errno(-r, "Failed to write system attribute: %m");
                         return EXIT_FAILURE;
                 }
 
@@ -122,13 +122,13 @@ int main(int argc, char *argv[]) {
 
                 value = udev_device_get_sysattr_value(device, "soft");
                 if (!value) {
-                        log_error("Failed to read system attribute: %s", strerror(-r));
+                        log_error_errno(-r, "Failed to read system attribute: %m");
                         return EXIT_FAILURE;
                 }
 
                 r = write_string_file(saved, value);
                 if (r < 0) {
-                        log_error("Failed to write %s: %s", saved, strerror(-r));
+                        log_error_errno(-r, "Failed to write %s: %m", saved);
                         return EXIT_FAILURE;
                 }