rose: use program offset, not final_id, in atable

This removes the need to look up the program offset in a table when
handling an anchored literal match.

src/rose/rose_build_anchored.h

@@ -56,10 +56,13 @@ std::vector<raw_dfa> buildAnchoredDfas(RoseBuildImpl &build);
 /**
  * \brief Construct an anchored_matcher_info runtime structure from the given
  * set of DFAs.
+ *
+ * Remap the literal final_ids used for raw_dfa reports to the program offsets
+ * given in litPrograms.
  */
 aligned_unique_ptr<anchored_matcher_info>
 buildAnchoredMatcher(RoseBuildImpl &build, std::vector<raw_dfa> &dfas,
-                     size_t *asize);
+                     const std::vector<u32> &litPrograms, size_t *asize);
 
 u32 anchoredStateSize(const anchored_matcher_info &atable);