Create ELF aliases for identical symbols

This change greatly reduces the number of modules that need to be
compiled. The only issue right now is that sometimes when viewing
symbol table entries, the aliased symbol is chosen.

third_party/make/job.c

@@ -1315,7 +1315,7 @@ new_job (struct file *file)
   /* Start the command sequence, record it in a new
      'struct child', and add that to the chain.  */
 
-  c = xcalloc (sizeof (struct child));
+  c = xcalloc (1, sizeof (struct child));
   output_init (&c->output);
 
   c->file = file;