Include handlerviz.pl in archive.

asio/src/Makefile.am

diff --git a/asio/src/Makefile.am b/asio/src/Makefile.am
index 6eec733..1dae0aa 100644
--- a/asio/src/Makefile.am
+++ b/asio/src/Makefile.am
@@ -525,7 +525,8 @@
 	examples/ssl/dh512.pem \
 	examples/timers/tick_count_timer.cpp \
 	tests/performance/handler_allocator.hpp \
-	tests/unit/archetypes/io_control_command.hpp
+	tests/unit/archetypes/io_control_command.hpp \
+	tools/handlerviz.pl
 
 MAINTAINERCLEANFILES = \
 	$(srcdir)/Makefile.in