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/initctl/initctl.c

@@ -290,8 +290,7 @@ static int server_init(Server *s, unsigned n_sockets) {
 
                 r = sd_is_fifo(fd, NULL);
                 if (r < 0) {
-                        log_error("Failed to determine file descriptor type: %s",
-                                  strerror(-r));
+                        log_error_errno(r, "Failed to determine file descriptor type: %m");
                         goto fail;
                 }