[decomp] finish actor-link-h and a few more (#592)

* finish actor-link-h

* decompile files

* fix pp issue

test/decompiler/reference/all_forward_declarations.gc

@@ -906,6 +906,7 @@
 (defenum entity-perm-status
   :bitfield #t
   :type uint16
+  (bit-1 1)
   (dead 2)
   (complete 6))
 
@@ -1060,3 +1061,28 @@
     )
   )
 (define-extern *progress-process* (pointer progress))
+(define-extern entity-by-name (function string entity))
+(define-extern entity-by-aid (function uint entity))
+
+(declare-type nav-mesh basic)
+(define-extern *default-nav-mesh* nav-mesh)
+
+(defenum path-control-flag
+  :bitfield #t
+  :type uint32
+  (display 0)
+  (not-found 4)
+  )
+
+(defenum nav-control-flags
+  :bitfield #t
+  :type uint32
+  (display-marks 0)
+  (bit8 8)
+  (bit13 13)
+  )
+
+(defmacro with-pp (&rest body)
+  `(rlet ((pp :reg r13 :reset-here #t :type process))
+         ,@body)
+  )