Hello.
Why don't you apply a difference below?
--- config.orig 2014-12-12 16:10:06.000000000 +0900
+++ config 2014-12-12 16:06:19.000000000 +0900
@@ -1,3 +1,3 @@
-ngx_addon_name=ngx_http_hello_dolly
-HTTP_MODULES="$HTTP_MODULES ngx_http_hello_dolly"
+ngx_addon_name=ngx_http_hello_dolly_module
+HTTP_MODULES="$HTTP_MODULES ngx_http_hello_dolly_module"
NGX_ADDON_SRCS="$NGX_ADDON_SRCS $ngx_addon_dir/ngx_http_hello_dolly.c"