have single dump function per engine

src/nfa/nfa_dump_api.h

@@ -35,7 +35,6 @@
 
 #if defined(DUMP_SUPPORT)
 
-#include <cstdio>
 #include <string>
 
 struct NFA;
@@ -43,13 +42,11 @@ struct NFA;
 namespace ue2 {
 
 /**
- * \brief Dump (in Graphviz 'dot' format) a representation of the NFA into the
- * file pointed to by dotFile.
+ * \brief Dump files representing the engine. All files dumped should begin with
+ * path/prefix specified by base. Generally a text file and a grpahviz (dot)
+ * files should be produced.
  */
-void nfaDumpDot(const struct NFA *nfa, FILE *dotFile, const std::string &base);
-
-/** \brief Dump a textual representation of the NFA. */
-void nfaDumpText(const struct NFA *fact, FILE *textFile);
+void nfaGenerateDumpFiles(const struct NFA *nfa, const std::string &base);
 
 } // namespace ue2