dtndht: Fix install target

The previous copying command includes non-existing variables. This commit replaces
the command with a more generic one.

Signed-off-by: Johannes Morgenroth <morgenroth@ibr.cs.tu-bs.de>

libs/dtndht/Makefile

@@ -41,7 +41,7 @@ endef
 
 define Package/dtndht/install
 	$(INSTALL_DIR) $(1)/usr/lib
-	$(CP) $(PKG_INSTALL_DIR)/usr/lib/lib$(PKG_NAME){.so,-$(PKG_VERSION_MAJOR).$(PKG_VERSION_MINOR).so.*} $(1)/usr/lib/
+	$(CP) $(PKG_INSTALL_DIR)/usr/lib/*.so.* $(1)/usr/lib/
 endef
 
 $(eval $(call BuildPackage,dtndht))