treewide: more log_*_errno() conversions, multiline calls

Basically:

find . -name '*.[ch]' | while read f; do perl -i.mmm -e \
'local $/;
 local $_=<>;
 s/log_(debug|info|notice|warning|error|emergency)\("([^"]*)%s"([^;]*),\s*strerror\(-?([->a-zA-Z_]+)\)\);/log_\1_errno(\4, "\2%m"\3);/gms;print;' \
 $f; done

Plus manual indentation fixups.

src/modules-load/modules-load.c

@@ -116,8 +116,7 @@ static int load_module(struct kmod_ctx *ctx, const char *m) {
                         else if (err == KMOD_PROBE_APPLY_BLACKLIST)
                                 log_info("Module '%s' is blacklisted", kmod_module_get_name(mod));
                         else {
-                                log_error("Failed to insert '%s': %s", kmod_module_get_name(mod),
-                                          strerror(-err));
+                                log_error_errno(err, "Failed to insert '%s': %m", kmod_module_get_name(mod));
                                 r = err;
                         }
                 }