Do not exit early on errors when -f is specified

When running with the -f option, do not stop recursion or proccessing
command line args if an error occurs.  Continue trying to remove all
the items specified on the command line.  However, still return an
error status if some files could not be removed.

Change-Id: I83d66babe833da8a68aad68248647ba0601c5d32
diff --git a/toolbox/rm.c b/toolbox/rm.c
index 127cbc4..957b586 100644
--- a/toolbox/rm.c
+++ b/toolbox/rm.c
@@ -45,8 +45,10 @@
             continue;
         sprintf(dn, "%s/%s", name, de->d_name);
         if (unlink_recursive(dn, flags) < 0) {
-            fail = 1;
-            break;
+            if (!(flags & OPT_FORCE)) {
+                fail = 1;
+                break;
+            }
         }
         errno = 0;
     }
@@ -71,6 +73,7 @@
     int ret;
     int i, c;
     int flags = 0;
+    int something_failed = 0;
 
     if (argc < 2)
         return usage();
@@ -110,10 +113,14 @@
 
         if (ret < 0) {
             fprintf(stderr, "rm failed for %s, %s\n", argv[i], strerror(errno));
-            return -1;
+            if (!(flags & OPT_FORCE)) {
+                return -1;
+            } else {
+                something_failed = 1;
+            }
         }
     }
 
-    return 0;
+    return something_failed;
 }