make llarp.h pure C compatable

include/llarp.h

@@ -1,12 +1,9 @@
 #ifndef LLARP_H_
 #define LLARP_H_
 
-#include <dht.h>
+#ifdef __cplusplus
 #include <ev.h>
-
 #include <mem.h>
-
-#ifdef __cplusplus
 #include <logic.hpp>
 #include <version.hpp>
 #include <handlers/tun.hpp>     // for handlers
@@ -41,17 +38,26 @@ extern "C"
   void
   llarp_main_inject_vpn_fd(struct llarp_main *m, int fd);
 
-  /// setup main context
+  /// setup main context, returns 0 on success
   int
   llarp_main_setup(struct llarp_main *ptr);
 
-  /// run main context
+  /// run main context, returns 0 on success, blocks until program end
   int
   llarp_main_run(struct llarp_main *ptr);
 
+  /// free main context and end all operations
+  void
+  llarp_main_free(struct llarp_main *ptr);
+
+#ifdef __cplusplus
+
   void
   llarp_main_abort(struct llarp_main *ptr);
 
+  const char *
+  handleBaseCmdLineArgs(int argc, char *argv[]);
+
   /// load nodeDB into memory
   int
   llarp_main_loadDatabase(struct llarp_main *ptr);
@@ -104,15 +110,6 @@ extern "C"
 
   llarp::RouterContact *
   llarp_main_getLocalRC(struct llarp_main *ptr);
-
-  void
-  llarp_main_free(struct llarp_main *ptr);
-
-  const char *
-  handleBaseCmdLineArgs(int argc, char *argv[]);
-
-#ifdef __cplusplus
-
   /// get RC from nodeDB
   llarp::RouterContact *
   llarp_main_getDatabase(struct llarp_main *ptr, byte_t *pk);