xvfork went away.

toys/pending/sh.c

diff --git a/toys/pending/sh.c b/toys/pending/sh.c
index 87f2f9f..e221960 100644
--- a/toys/pending/sh.c
+++ b/toys/pending/sh.c
@@ -26,6 +26,9 @@
 
 USE_SH(NEWTOY(sh, "c:i", TOYFLAG_BIN))
 USE_SH(OLDTOY(toysh, sh, TOYFLAG_BIN))
+// Login lies in argv[0], so add some aliases to catch that
+USE_SH(OLDTOY(-sh, sh, 0))
+USE_SH(OLDTOY(-toysh, sh, 0))
 
 config SH
   bool "sh (toysh)"
@@ -305,7 +308,7 @@
   } else {
     int status;
 
-    cmd->pid = xvfork();
+    cmd->pid = vfork();
     if (!cmd->pid) xexec(cmd->argv);
     else waitpid(cmd->pid, &status, 0);